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Finding the Fourth Proportional to 617.83, 925.37 and 422.36

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Solution

The fourth proportional to 617.83, 925.37 and 422.36 is: 632.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.83 : 925.37 = 422.36 : x
  2. Step 2: Convert to fraction form
    617.83/925.37 = 422.36/x
  3. Step 3: Cross multiply
    617.83x = 925.37 × 422.36
  4. Step 4: Simplify right side
    617.83x = 390,845.17
  5. Step 5: Solve for x
    x = 390,845.17/617.83
  6. Step 6: Final answer
    x = 632.61

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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.