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Finding the Fourth Proportional to 638.56, 950.29 and 615.52

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Solution

The fourth proportional to 638.56, 950.29 and 615.52 is: 916.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.56 : 950.29 = 615.52 : x
  2. Step 2: Convert to fraction form
    638.56/950.29 = 615.52/x
  3. Step 3: Cross multiply
    638.56x = 950.29 × 615.52
  4. Step 4: Simplify right side
    638.56x = 584,922.50
  5. Step 5: Solve for x
    x = 584,922.50/638.56
  6. Step 6: Final answer
    x = 916.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.