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Finding the Fourth Proportional to 377.28, 565.74 and 171.72

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Solution

The fourth proportional to 377.28, 565.74 and 171.72 is: 257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.28 : 565.74 = 171.72 : x
  2. Step 2: Convert to fraction form
    377.28/565.74 = 171.72/x
  3. Step 3: Cross multiply
    377.28x = 565.74 × 171.72
  4. Step 4: Simplify right side
    377.28x = 97,148.87
  5. Step 5: Solve for x
    x = 97,148.87/377.28
  6. Step 6: Final answer
    x = 257.50

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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.