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Finding the Fourth Proportional to 1,025.81, 1,414.73 and 627.17

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Solution

The fourth proportional to 1,025.81, 1,414.73 and 627.17 is: 864.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.81 : 1,414.73 = 627.17 : x
  2. Step 2: Convert to fraction form
    1,025.81/1,414.73 = 627.17/x
  3. Step 3: Cross multiply
    1,025.81x = 1,414.73 × 627.17
  4. Step 4: Simplify right side
    1,025.81x = 887,273.08
  5. Step 5: Solve for x
    x = 887,273.08/1,025.81
  6. Step 6: Final answer
    x = 864.95

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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.