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Finding the Fourth Proportional to 545.27, 752.90 and 349.11

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Solution

The fourth proportional to 545.27, 752.90 and 349.11 is: 482.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.27 : 752.90 = 349.11 : x
  2. Step 2: Convert to fraction form
    545.27/752.90 = 349.11/x
  3. Step 3: Cross multiply
    545.27x = 752.90 × 349.11
  4. Step 4: Simplify right side
    545.27x = 262,843.17
  5. Step 5: Solve for x
    x = 262,843.17/545.27
  6. Step 6: Final answer
    x = 482.05

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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.