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Finding the Fourth Proportional to 946.59, 1,306.41 and 725.46

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Solution

The fourth proportional to 946.59, 1,306.41 and 725.46 is: 1,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.59 : 1,306.41 = 725.46 : x
  2. Step 2: Convert to fraction form
    946.59/1,306.41 = 725.46/x
  3. Step 3: Cross multiply
    946.59x = 1,306.41 × 725.46
  4. Step 4: Simplify right side
    946.59x = 947,748.20
  5. Step 5: Solve for x
    x = 947,748.20/946.59
  6. Step 6: Final answer
    x = 1,001.22

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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.