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Finding the Fourth Proportional to 1,132.16, 1,698.18 and 439.01

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Solution

The fourth proportional to 1,132.16, 1,698.18 and 439.01 is: 658.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.16 : 1,698.18 = 439.01 : x
  2. Step 2: Convert to fraction form
    1,132.16/1,698.18 = 439.01/x
  3. Step 3: Cross multiply
    1,132.16x = 1,698.18 × 439.01
  4. Step 4: Simplify right side
    1,132.16x = 745,509.51
  5. Step 5: Solve for x
    x = 745,509.51/1,132.16
  6. Step 6: Final answer
    x = 658.49

Related Problems

Find fourth proportional to 566.08, 849.09 and 219.50
Half scale
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Double scale
Find fourth proportional to 1,133.16, 1,699.68 and 440.01
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.