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Finding the Fourth Proportional to 732.38, 1,009.45 and 555.28

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Solution

The fourth proportional to 732.38, 1,009.45 and 555.28 is: 765.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.38 : 1,009.45 = 555.28 : x
  2. Step 2: Convert to fraction form
    732.38/1,009.45 = 555.28/x
  3. Step 3: Cross multiply
    732.38x = 1,009.45 × 555.28
  4. Step 4: Simplify right side
    732.38x = 560,526.01
  5. Step 5: Solve for x
    x = 560,526.01/732.38
  6. Step 6: Final answer
    x = 765.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.