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Finding the Fourth Proportional to 615.27, 922.88 and 153.05

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Solution

The fourth proportional to 615.27, 922.88 and 153.05 is: 229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.27 : 922.88 = 153.05 : x
  2. Step 2: Convert to fraction form
    615.27/922.88 = 153.05/x
  3. Step 3: Cross multiply
    615.27x = 922.88 × 153.05
  4. Step 4: Simplify right side
    615.27x = 141,241.40
  5. Step 5: Solve for x
    x = 141,241.40/615.27
  6. Step 6: Final answer
    x = 229.56

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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.