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Finding the Fourth Proportional to 1,088.96, 1,632.15 and 439.34

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Solution

The fourth proportional to 1,088.96, 1,632.15 and 439.34 is: 658.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.96 : 1,632.15 = 439.34 : x
  2. Step 2: Convert to fraction form
    1,088.96/1,632.15 = 439.34/x
  3. Step 3: Cross multiply
    1,088.96x = 1,632.15 × 439.34
  4. Step 4: Simplify right side
    1,088.96x = 717,060.62
  5. Step 5: Solve for x
    x = 717,060.62/1,088.96
  6. Step 6: Final answer
    x = 658.49

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Double scale
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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.