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Finding the Fourth Proportional to 531.44, 732.39 and 521.99

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Solution

The fourth proportional to 531.44, 732.39 and 521.99 is: 719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.44 : 732.39 = 521.99 : x
  2. Step 2: Convert to fraction form
    531.44/732.39 = 521.99/x
  3. Step 3: Cross multiply
    531.44x = 732.39 × 521.99
  4. Step 4: Simplify right side
    531.44x = 382,300.26
  5. Step 5: Solve for x
    x = 382,300.26/531.44
  6. Step 6: Final answer
    x = 719.37

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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.