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Finding the Fourth Proportional to 718.93, 991.33 and 532.18

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Solution

The fourth proportional to 718.93, 991.33 and 532.18 is: 733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.93 : 991.33 = 532.18 : x
  2. Step 2: Convert to fraction form
    718.93/991.33 = 532.18/x
  3. Step 3: Cross multiply
    718.93x = 991.33 × 532.18
  4. Step 4: Simplify right side
    718.93x = 527,566.00
  5. Step 5: Solve for x
    x = 527,566.00/718.93
  6. Step 6: Final answer
    x = 733.82

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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.