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Finding the Fourth Proportional to 630.27, 862.27 and 627.53

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Solution

The fourth proportional to 630.27, 862.27 and 627.53 is: 858.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.27 : 862.27 = 627.53 : x
  2. Step 2: Convert to fraction form
    630.27/862.27 = 627.53/x
  3. Step 3: Cross multiply
    630.27x = 862.27 × 627.53
  4. Step 4: Simplify right side
    630.27x = 541,100.29
  5. Step 5: Solve for x
    x = 541,100.29/630.27
  6. Step 6: Final answer
    x = 858.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.