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Finding the Fourth Proportional to 959.58, 1,324.12 and 539.86

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Solution

The fourth proportional to 959.58, 1,324.12 and 539.86 is: 744.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.58 : 1,324.12 = 539.86 : x
  2. Step 2: Convert to fraction form
    959.58/1,324.12 = 539.86/x
  3. Step 3: Cross multiply
    959.58x = 1,324.12 × 539.86
  4. Step 4: Simplify right side
    959.58x = 714,839.42
  5. Step 5: Solve for x
    x = 714,839.42/959.58
  6. Step 6: Final answer
    x = 744.95

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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.