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Finding the Fourth Proportional to 377.28, 565.13 and 261.95

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Solution

The fourth proportional to 377.28, 565.13 and 261.95 is: 392.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.28 : 565.13 = 261.95 : x
  2. Step 2: Convert to fraction form
    377.28/565.13 = 261.95/x
  3. Step 3: Cross multiply
    377.28x = 565.13 × 261.95
  4. Step 4: Simplify right side
    377.28x = 148,036.44
  5. Step 5: Solve for x
    x = 148,036.44/377.28
  6. Step 6: Final answer
    x = 392.38

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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.