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Finding the Fourth Proportional to 487.63, 672.92 and 363.39

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Solution

The fourth proportional to 487.63, 672.92 and 363.39 is: 501.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.63 : 672.92 = 363.39 : x
  2. Step 2: Convert to fraction form
    487.63/672.92 = 363.39/x
  3. Step 3: Cross multiply
    487.63x = 672.92 × 363.39
  4. Step 4: Simplify right side
    487.63x = 244,534.99
  5. Step 5: Solve for x
    x = 244,534.99/487.63
  6. Step 6: Final answer
    x = 501.48

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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.