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Finding the Fourth Proportional to 761.54, 1,044.72 and 714.39

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Solution

The fourth proportional to 761.54, 1,044.72 and 714.39 is: 980.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.54 : 1,044.72 = 714.39 : x
  2. Step 2: Convert to fraction form
    761.54/1,044.72 = 714.39/x
  3. Step 3: Cross multiply
    761.54x = 1,044.72 × 714.39
  4. Step 4: Simplify right side
    761.54x = 746,337.52
  5. Step 5: Solve for x
    x = 746,337.52/761.54
  6. Step 6: Final answer
    x = 980.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.