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Finding the Fourth Proportional to 615.29, 922.92 and 153.07

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Solution

The fourth proportional to 615.29, 922.92 and 153.07 is: 229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.29 : 922.92 = 153.07 : x
  2. Step 2: Convert to fraction form
    615.29/922.92 = 153.07/x
  3. Step 3: Cross multiply
    615.29x = 922.92 × 153.07
  4. Step 4: Simplify right side
    615.29x = 141,268.67
  5. Step 5: Solve for x
    x = 141,268.67/615.29
  6. Step 6: Final answer
    x = 229.60

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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.