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Finding the Fourth Proportional to 545.07, 817.15 and 179.76

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Solution

The fourth proportional to 545.07, 817.15 and 179.76 is: 269.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.07 : 817.15 = 179.76 : x
  2. Step 2: Convert to fraction form
    545.07/817.15 = 179.76/x
  3. Step 3: Cross multiply
    545.07x = 817.15 × 179.76
  4. Step 4: Simplify right side
    545.07x = 146,890.88
  5. Step 5: Solve for x
    x = 146,890.88/545.07
  6. Step 6: Final answer
    x = 269.49

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Double scale
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Similar ratio
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1.5x scale

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.