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Finding the Fourth Proportional to 615.16, 922.12 and 249.80

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Solution

The fourth proportional to 615.16, 922.12 and 249.80 is: 374.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.16 : 922.12 = 249.80 : x
  2. Step 2: Convert to fraction form
    615.16/922.12 = 249.80/x
  3. Step 3: Cross multiply
    615.16x = 922.12 × 249.80
  4. Step 4: Simplify right side
    615.16x = 230,345.58
  5. Step 5: Solve for x
    x = 230,345.58/615.16
  6. Step 6: Final answer
    x = 374.45

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Double scale
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1.5x scale

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.