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Finding the Fourth Proportional to 632.08, 948.52 and 426.72

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Solution

The fourth proportional to 632.08, 948.52 and 426.72 is: 640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.08 : 948.52 = 426.72 : x
  2. Step 2: Convert to fraction form
    632.08/948.52 = 426.72/x
  3. Step 3: Cross multiply
    632.08x = 948.52 × 426.72
  4. Step 4: Simplify right side
    632.08x = 404,752.45
  5. Step 5: Solve for x
    x = 404,752.45/632.08
  6. Step 6: Final answer
    x = 640.35

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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.