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Finding the Fourth Proportional to 959.61, 1,324.17 and 539.87

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Solution

The fourth proportional to 959.61, 1,324.17 and 539.87 is: 744.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.61 : 1,324.17 = 539.87 : x
  2. Step 2: Convert to fraction form
    959.61/1,324.17 = 539.87/x
  3. Step 3: Cross multiply
    959.61x = 1,324.17 × 539.87
  4. Step 4: Simplify right side
    959.61x = 714,873.04
  5. Step 5: Solve for x
    x = 714,873.04/959.61
  6. Step 6: Final answer
    x = 744.96

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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.