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Finding the Fourth Proportional to 618.48, 927.36 and 185.56

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Solution

The fourth proportional to 618.48, 927.36 and 185.56 is: 278.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.48 : 927.36 = 185.56 : x
  2. Step 2: Convert to fraction form
    618.48/927.36 = 185.56/x
  3. Step 3: Cross multiply
    618.48x = 927.36 × 185.56
  4. Step 4: Simplify right side
    618.48x = 172,080.92
  5. Step 5: Solve for x
    x = 172,080.92/618.48
  6. Step 6: Final answer
    x = 278.23

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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.