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Finding the Fourth Proportional to 545.13, 817.81 and 179.91

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Solution

The fourth proportional to 545.13, 817.81 and 179.91 is: 269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.13 : 817.81 = 179.91 : x
  2. Step 2: Convert to fraction form
    545.13/817.81 = 179.91/x
  3. Step 3: Cross multiply
    545.13x = 817.81 × 179.91
  4. Step 4: Simplify right side
    545.13x = 147,131.75
  5. Step 5: Solve for x
    x = 147,131.75/545.13
  6. Step 6: Final answer
    x = 269.90

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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.