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Finding the Fourth Proportional to 618.55, 927.55 and 185.60

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Solution

The fourth proportional to 618.55, 927.55 and 185.60 is: 278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.55 : 927.55 = 185.60 : x
  2. Step 2: Convert to fraction form
    618.55/927.55 = 185.60/x
  3. Step 3: Cross multiply
    618.55x = 927.55 × 185.60
  4. Step 4: Simplify right side
    618.55x = 172,155.13
  5. Step 5: Solve for x
    x = 172,155.13/618.55
  6. Step 6: Final answer
    x = 278.32

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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.