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Finding the Fourth Proportional to 742.87, 1,025.04 and 463.06

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Solution

The fourth proportional to 742.87, 1,025.04 and 463.06 is: 638.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    742.87 : 1,025.04 = 463.06 : x
  2. Step 2: Convert to fraction form
    742.87/1,025.04 = 463.06/x
  3. Step 3: Cross multiply
    742.87x = 1,025.04 × 463.06
  4. Step 4: Simplify right side
    742.87x = 474,655.02
  5. Step 5: Solve for x
    x = 474,655.02/742.87
  6. Step 6: Final answer
    x = 638.95

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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.