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Finding the Fourth Proportional to 714.52, 1,064.17 and 672.64

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Solution

The fourth proportional to 714.52, 1,064.17 and 672.64 is: 1,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.52 : 1,064.17 = 672.64 : x
  2. Step 2: Convert to fraction form
    714.52/1,064.17 = 672.64/x
  3. Step 3: Cross multiply
    714.52x = 1,064.17 × 672.64
  4. Step 4: Simplify right side
    714.52x = 715,799.95
  5. Step 5: Solve for x
    x = 715,799.95/714.52
  6. Step 6: Final answer
    x = 1,001.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.