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Finding the Fourth Proportional to 377.92, 521.47 and 253.79

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Solution

The fourth proportional to 377.92, 521.47 and 253.79 is: 350.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.92 : 521.47 = 253.79 : x
  2. Step 2: Convert to fraction form
    377.92/521.47 = 253.79/x
  3. Step 3: Cross multiply
    377.92x = 521.47 × 253.79
  4. Step 4: Simplify right side
    377.92x = 132,343.87
  5. Step 5: Solve for x
    x = 132,343.87/377.92
  6. Step 6: Final answer
    x = 350.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.