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Finding the Fourth Proportional to 615.29, 921.11 and 371.07

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Solution

The fourth proportional to 615.29, 921.11 and 371.07 is: 555.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.29 : 921.11 = 371.07 : x
  2. Step 2: Convert to fraction form
    615.29/921.11 = 371.07/x
  3. Step 3: Cross multiply
    615.29x = 921.11 × 371.07
  4. Step 4: Simplify right side
    615.29x = 341,794.43
  5. Step 5: Solve for x
    x = 341,794.43/615.29
  6. Step 6: Final answer
    x = 555.51

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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.