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Finding the Fourth Proportional to 635.04, 875.31 and 487.73

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Solution

The fourth proportional to 635.04, 875.31 and 487.73 is: 672.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.04 : 875.31 = 487.73 : x
  2. Step 2: Convert to fraction form
    635.04/875.31 = 487.73/x
  3. Step 3: Cross multiply
    635.04x = 875.31 × 487.73
  4. Step 4: Simplify right side
    635.04x = 426,911.79
  5. Step 5: Solve for x
    x = 426,911.79/635.04
  6. Step 6: Final answer
    x = 672.26

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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.