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Finding the Fourth Proportional to 671.44, 1,007.56 and 363.29

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Solution

The fourth proportional to 671.44, 1,007.56 and 363.29 is: 545.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.44 : 1,007.56 = 363.29 : x
  2. Step 2: Convert to fraction form
    671.44/1,007.56 = 363.29/x
  3. Step 3: Cross multiply
    671.44x = 1,007.56 × 363.29
  4. Step 4: Simplify right side
    671.44x = 366,030.53
  5. Step 5: Solve for x
    x = 366,030.53/671.44
  6. Step 6: Final answer
    x = 545.14

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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.