Home / 1,220.13-1,830.22-440.19

Finding the Fourth Proportional to 1,220.13, 1,830.22 and 440.19

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Solution

The fourth proportional to 1,220.13, 1,830.22 and 440.19 is: 660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.13 : 1,830.22 = 440.19 : x
  2. Step 2: Convert to fraction form
    1,220.13/1,830.22 = 440.19/x
  3. Step 3: Cross multiply
    1,220.13x = 1,830.22 × 440.19
  4. Step 4: Simplify right side
    1,220.13x = 805,648.02
  5. Step 5: Solve for x
    x = 805,648.02/1,220.13
  6. Step 6: Final answer
    x = 660.30

Related Problems

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Half scale
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Double scale
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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.