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Finding the Fourth Proportional to 723.24, 997.02 and 515.88

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Solution

The fourth proportional to 723.24, 997.02 and 515.88 is: 711.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.24 : 997.02 = 515.88 : x
  2. Step 2: Convert to fraction form
    723.24/997.02 = 515.88/x
  3. Step 3: Cross multiply
    723.24x = 997.02 × 515.88
  4. Step 4: Simplify right side
    723.24x = 514,342.68
  5. Step 5: Solve for x
    x = 514,342.68/723.24
  6. Step 6: Final answer
    x = 711.16

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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.