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Finding the Fourth Proportional to 1,301.13, 1,951.29 and 479.39

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Solution

The fourth proportional to 1,301.13, 1,951.29 and 479.39 is: 718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.13 : 1,951.29 = 479.39 : x
  2. Step 2: Convert to fraction form
    1,301.13/1,951.29 = 479.39/x
  3. Step 3: Cross multiply
    1,301.13x = 1,951.29 × 479.39
  4. Step 4: Simplify right side
    1,301.13x = 935,419.16
  5. Step 5: Solve for x
    x = 935,419.16/1,301.13
  6. Step 6: Final answer
    x = 718.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.