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Finding the Fourth Proportional to 618.23, 927.05 and 253.13

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Solution

The fourth proportional to 618.23, 927.05 and 253.13 is: 379.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.23 : 927.05 = 253.13 : x
  2. Step 2: Convert to fraction form
    618.23/927.05 = 253.13/x
  3. Step 3: Cross multiply
    618.23x = 927.05 × 253.13
  4. Step 4: Simplify right side
    618.23x = 234,658.27
  5. Step 5: Solve for x
    x = 234,658.27/618.23
  6. Step 6: Final answer
    x = 379.56

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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.