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Finding the Fourth Proportional to 545.45, 818.10 and 180.20

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Solution

The fourth proportional to 545.45, 818.10 and 180.20 is: 270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.45 : 818.10 = 180.20 : x
  2. Step 2: Convert to fraction form
    545.45/818.10 = 180.20/x
  3. Step 3: Cross multiply
    545.45x = 818.10 × 180.20
  4. Step 4: Simplify right side
    545.45x = 147,417.53
  5. Step 5: Solve for x
    x = 147,417.53/545.45
  6. Step 6: Final answer
    x = 270.27

Related Problems

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Half scale
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Double scale
Find fourth proportional to 546.45, 819.60 and 181.20
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.