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Finding the Fourth Proportional to 547.76, 755.68 and 545.32

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Solution

The fourth proportional to 547.76, 755.68 and 545.32 is: 752.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.76 : 755.68 = 545.32 : x
  2. Step 2: Convert to fraction form
    547.76/755.68 = 545.32/x
  3. Step 3: Cross multiply
    547.76x = 755.68 × 545.32
  4. Step 4: Simplify right side
    547.76x = 412,087.42
  5. Step 5: Solve for x
    x = 412,087.42/547.76
  6. Step 6: Final answer
    x = 752.31

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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.