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Finding the Fourth Proportional to 615.72, 922.50 and 371.79

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Solution

The fourth proportional to 615.72, 922.50 and 371.79 is: 557.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.72 : 922.50 = 371.79 : x
  2. Step 2: Convert to fraction form
    615.72/922.50 = 371.79/x
  3. Step 3: Cross multiply
    615.72x = 922.50 × 371.79
  4. Step 4: Simplify right side
    615.72x = 342,976.28
  5. Step 5: Solve for x
    x = 342,976.28/615.72
  6. Step 6: Final answer
    x = 557.03

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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.