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Finding the Fourth Proportional to 545.60, 752.67 and 349.31

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Solution

The fourth proportional to 545.60, 752.67 and 349.31 is: 481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.60 : 752.67 = 349.31 : x
  2. Step 2: Convert to fraction form
    545.60/752.67 = 349.31/x
  3. Step 3: Cross multiply
    545.60x = 752.67 × 349.31
  4. Step 4: Simplify right side
    545.60x = 262,911.39
  5. Step 5: Solve for x
    x = 262,911.39/545.60
  6. Step 6: Final answer
    x = 481.88

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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.