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Finding the Fourth Proportional to 545.05, 817.64 and 179.76

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Solution

The fourth proportional to 545.05, 817.64 and 179.76 is: 269.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.05 : 817.64 = 179.76 : x
  2. Step 2: Convert to fraction form
    545.05/817.64 = 179.76/x
  3. Step 3: Cross multiply
    545.05x = 817.64 × 179.76
  4. Step 4: Simplify right side
    545.05x = 146,978.97
  5. Step 5: Solve for x
    x = 146,978.97/545.05
  6. Step 6: Final answer
    x = 269.66

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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.