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Finding the Fourth Proportional to 644.05, 966.13 and 248.87

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Solution

The fourth proportional to 644.05, 966.13 and 248.87 is: 373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.05 : 966.13 = 248.87 : x
  2. Step 2: Convert to fraction form
    644.05/966.13 = 248.87/x
  3. Step 3: Cross multiply
    644.05x = 966.13 × 248.87
  4. Step 4: Simplify right side
    644.05x = 240,442.57
  5. Step 5: Solve for x
    x = 240,442.57/644.05
  6. Step 6: Final answer
    x = 373.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.