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Finding the Fourth Proportional to 615.44, 923.56 and 230.70

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Solution

The fourth proportional to 615.44, 923.56 and 230.70 is: 346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.44 : 923.56 = 230.70 : x
  2. Step 2: Convert to fraction form
    615.44/923.56 = 230.70/x
  3. Step 3: Cross multiply
    615.44x = 923.56 × 230.70
  4. Step 4: Simplify right side
    615.44x = 213,065.29
  5. Step 5: Solve for x
    x = 213,065.29/615.44
  6. Step 6: Final answer
    x = 346.20

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Double scale
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Similar ratio
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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.