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Finding the Fourth Proportional to 615.75, 922.82 and 303.57

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Solution

The fourth proportional to 615.75, 922.82 and 303.57 is: 454.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.75 : 922.82 = 303.57 : x
  2. Step 2: Convert to fraction form
    615.75/922.82 = 303.57/x
  3. Step 3: Cross multiply
    615.75x = 922.82 × 303.57
  4. Step 4: Simplify right side
    615.75x = 280,138.95
  5. Step 5: Solve for x
    x = 280,138.95/615.75
  6. Step 6: Final answer
    x = 454.96

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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.