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Finding the Fourth Proportional to 548.29, 753.85 and 488.72

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Solution

The fourth proportional to 548.29, 753.85 and 488.72 is: 671.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.29 : 753.85 = 488.72 : x
  2. Step 2: Convert to fraction form
    548.29/753.85 = 488.72/x
  3. Step 3: Cross multiply
    548.29x = 753.85 × 488.72
  4. Step 4: Simplify right side
    548.29x = 368,421.57
  5. Step 5: Solve for x
    x = 368,421.57/548.29
  6. Step 6: Final answer
    x = 671.95

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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.