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Finding the Fourth Proportional to 545.80, 752.28 and 349

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Solution

The fourth proportional to 545.80, 752.28 and 349 is: 481.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.80 : 752.28 = 349 : x
  2. Step 2: Convert to fraction form
    545.80/752.28 = 349/x
  3. Step 3: Cross multiply
    545.80x = 752.28 × 349
  4. Step 4: Simplify right side
    545.80x = 262,545.72
  5. Step 5: Solve for x
    x = 262,545.72/545.80
  6. Step 6: Final answer
    x = 481.03

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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.