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Finding the Fourth Proportional to 377.29, 565.90 and 221.19

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Solution

The fourth proportional to 377.29, 565.90 and 221.19 is: 331.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.29 : 565.90 = 221.19 : x
  2. Step 2: Convert to fraction form
    377.29/565.90 = 221.19/x
  3. Step 3: Cross multiply
    377.29x = 565.90 × 221.19
  4. Step 4: Simplify right side
    377.29x = 125,170.32
  5. Step 5: Solve for x
    x = 125,170.32/377.29
  6. Step 6: Final answer
    x = 331.77

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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.