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Finding the Fourth Proportional to 932.58, 1,287.36 and 652.86

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Solution

The fourth proportional to 932.58, 1,287.36 and 652.86 is: 901.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.58 : 1,287.36 = 652.86 : x
  2. Step 2: Convert to fraction form
    932.58/1,287.36 = 652.86/x
  3. Step 3: Cross multiply
    932.58x = 1,287.36 × 652.86
  4. Step 4: Simplify right side
    932.58x = 840,465.85
  5. Step 5: Solve for x
    x = 840,465.85/932.58
  6. Step 6: Final answer
    x = 901.23

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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.