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Finding the Fourth Proportional to 487.32, 672.54 and 453.15

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Solution

The fourth proportional to 487.32, 672.54 and 453.15 is: 625.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.32 : 672.54 = 453.15 : x
  2. Step 2: Convert to fraction form
    487.32/672.54 = 453.15/x
  3. Step 3: Cross multiply
    487.32x = 672.54 × 453.15
  4. Step 4: Simplify right side
    487.32x = 304,761.50
  5. Step 5: Solve for x
    x = 304,761.50/487.32
  6. Step 6: Final answer
    x = 625.38

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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.