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Finding the Fourth Proportional to 545.60, 753.11 and 346.57

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Solution

The fourth proportional to 545.60, 753.11 and 346.57 is: 478.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.60 : 753.11 = 346.57 : x
  2. Step 2: Convert to fraction form
    545.60/753.11 = 346.57/x
  3. Step 3: Cross multiply
    545.60x = 753.11 × 346.57
  4. Step 4: Simplify right side
    545.60x = 261,003.02
  5. Step 5: Solve for x
    x = 261,003.02/545.60
  6. Step 6: Final answer
    x = 478.38

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.