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Finding the Fourth Proportional to 545.46, 818.22 and 155.49

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Solution

The fourth proportional to 545.46, 818.22 and 155.49 is: 233.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.46 : 818.22 = 155.49 : x
  2. Step 2: Convert to fraction form
    545.46/818.22 = 155.49/x
  3. Step 3: Cross multiply
    545.46x = 818.22 × 155.49
  4. Step 4: Simplify right side
    545.46x = 127,222.98
  5. Step 5: Solve for x
    x = 127,222.98/545.46
  6. Step 6: Final answer
    x = 233.24

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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.