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Finding the Fourth Proportional to 531.36, 731.10 and 519.09

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Solution

The fourth proportional to 531.36, 731.10 and 519.09 is: 714.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.36 : 731.10 = 519.09 : x
  2. Step 2: Convert to fraction form
    531.36/731.10 = 519.09/x
  3. Step 3: Cross multiply
    531.36x = 731.10 × 519.09
  4. Step 4: Simplify right side
    531.36x = 379,506.70
  5. Step 5: Solve for x
    x = 379,506.70/531.36
  6. Step 6: Final answer
    x = 714.22

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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.