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Finding the Fourth Proportional to 545.42, 818.27 and 180.21

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Solution

The fourth proportional to 545.42, 818.27 and 180.21 is: 270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.42 : 818.27 = 180.21 : x
  2. Step 2: Convert to fraction form
    545.42/818.27 = 180.21/x
  3. Step 3: Cross multiply
    545.42x = 818.27 × 180.21
  4. Step 4: Simplify right side
    545.42x = 147,463.28
  5. Step 5: Solve for x
    x = 147,463.28/545.42
  6. Step 6: Final answer
    x = 270.37

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Double scale
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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.