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Finding the Fourth Proportional to 545.69, 818.54 and 180.51

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Solution

The fourth proportional to 545.69, 818.54 and 180.51 is: 270.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.69 : 818.54 = 180.51 : x
  2. Step 2: Convert to fraction form
    545.69/818.54 = 180.51/x
  3. Step 3: Cross multiply
    545.69x = 818.54 × 180.51
  4. Step 4: Simplify right side
    545.69x = 147,753.75
  5. Step 5: Solve for x
    x = 147,753.75/545.69
  6. Step 6: Final answer
    x = 270.77

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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.