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Finding the Fourth Proportional to 410.27, 615.51 and 307.74

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Solution

The fourth proportional to 410.27, 615.51 and 307.74 is: 461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.27 : 615.51 = 307.74 : x
  2. Step 2: Convert to fraction form
    410.27/615.51 = 307.74/x
  3. Step 3: Cross multiply
    410.27x = 615.51 × 307.74
  4. Step 4: Simplify right side
    410.27x = 189,419.36
  5. Step 5: Solve for x
    x = 189,419.36/410.27
  6. Step 6: Final answer
    x = 461.70

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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.