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Finding the Fourth Proportional to 637.65, 879.59 and 460.42

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Solution

The fourth proportional to 637.65, 879.59 and 460.42 is: 635.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.65 : 879.59 = 460.42 : x
  2. Step 2: Convert to fraction form
    637.65/879.59 = 460.42/x
  3. Step 3: Cross multiply
    637.65x = 879.59 × 460.42
  4. Step 4: Simplify right side
    637.65x = 404,979.78
  5. Step 5: Solve for x
    x = 404,979.78/637.65
  6. Step 6: Final answer
    x = 635.11

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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.