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Finding the Fourth Proportional to 575.01, 861.39 and 545.49

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Solution

The fourth proportional to 575.01, 861.39 and 545.49 is: 817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.01 : 861.39 = 545.49 : x
  2. Step 2: Convert to fraction form
    575.01/861.39 = 545.49/x
  3. Step 3: Cross multiply
    575.01x = 861.39 × 545.49
  4. Step 4: Simplify right side
    575.01x = 469,879.63
  5. Step 5: Solve for x
    x = 469,879.63/575.01
  6. Step 6: Final answer
    x = 817.17

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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.