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Finding the Fourth Proportional to 625.44, 941.89 and 545.25

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Solution

The fourth proportional to 625.44, 941.89 and 545.25 is: 821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.44 : 941.89 = 545.25 : x
  2. Step 2: Convert to fraction form
    625.44/941.89 = 545.25/x
  3. Step 3: Cross multiply
    625.44x = 941.89 × 545.25
  4. Step 4: Simplify right side
    625.44x = 513,565.52
  5. Step 5: Solve for x
    x = 513,565.52/625.44
  6. Step 6: Final answer
    x = 821.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.