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Finding the Fourth Proportional to 732.97, 1,011.51 and 438.25

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Solution

The fourth proportional to 732.97, 1,011.51 and 438.25 is: 604.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.97 : 1,011.51 = 438.25 : x
  2. Step 2: Convert to fraction form
    732.97/1,011.51 = 438.25/x
  3. Step 3: Cross multiply
    732.97x = 1,011.51 × 438.25
  4. Step 4: Simplify right side
    732.97x = 443,294.26
  5. Step 5: Solve for x
    x = 443,294.26/732.97
  6. Step 6: Final answer
    x = 604.79

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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.