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Finding the Fourth Proportional to 615.93, 922.16 and 480.56

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Solution

The fourth proportional to 615.93, 922.16 and 480.56 is: 719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.93 : 922.16 = 480.56 : x
  2. Step 2: Convert to fraction form
    615.93/922.16 = 480.56/x
  3. Step 3: Cross multiply
    615.93x = 922.16 × 480.56
  4. Step 4: Simplify right side
    615.93x = 443,146.20
  5. Step 5: Solve for x
    x = 443,146.20/615.93
  6. Step 6: Final answer
    x = 719.47

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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.