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Finding the Fourth Proportional to 934.28, 1,402.08 and 626.72

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Solution

The fourth proportional to 934.28, 1,402.08 and 626.72 is: 940.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.28 : 1,402.08 = 626.72 : x
  2. Step 2: Convert to fraction form
    934.28/1,402.08 = 626.72/x
  3. Step 3: Cross multiply
    934.28x = 1,402.08 × 626.72
  4. Step 4: Simplify right side
    934.28x = 878,711.58
  5. Step 5: Solve for x
    x = 878,711.58/934.28
  6. Step 6: Final answer
    x = 940.52

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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.