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Finding the Fourth Proportional to 548.92, 749.81 and 545.32

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Solution

The fourth proportional to 548.92, 749.81 and 545.32 is: 744.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.92 : 749.81 = 545.32 : x
  2. Step 2: Convert to fraction form
    548.92/749.81 = 545.32/x
  3. Step 3: Cross multiply
    548.92x = 749.81 × 545.32
  4. Step 4: Simplify right side
    548.92x = 408,886.39
  5. Step 5: Solve for x
    x = 408,886.39/548.92
  6. Step 6: Final answer
    x = 744.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.