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Finding the Fourth Proportional to 632.73, 872.86 and 545.25

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Solution

The fourth proportional to 632.73, 872.86 and 545.25 is: 752.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.73 : 872.86 = 545.25 : x
  2. Step 2: Convert to fraction form
    632.73/872.86 = 545.25/x
  3. Step 3: Cross multiply
    632.73x = 872.86 × 545.25
  4. Step 4: Simplify right side
    632.73x = 475,926.92
  5. Step 5: Solve for x
    x = 475,926.92/632.73
  6. Step 6: Final answer
    x = 752.18

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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.