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Finding the Fourth Proportional to 377.55, 565.43 and 214.92

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Solution

The fourth proportional to 377.55, 565.43 and 214.92 is: 321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.55 : 565.43 = 214.92 : x
  2. Step 2: Convert to fraction form
    377.55/565.43 = 214.92/x
  3. Step 3: Cross multiply
    377.55x = 565.43 × 214.92
  4. Step 4: Simplify right side
    377.55x = 121,521.14
  5. Step 5: Solve for x
    x = 121,521.14/377.55
  6. Step 6: Final answer
    x = 321.87

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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.