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Finding the Fourth Proportional to 618.66, 928.11 and 234.18

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Solution

The fourth proportional to 618.66, 928.11 and 234.18 is: 351.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.66 : 928.11 = 234.18 : x
  2. Step 2: Convert to fraction form
    618.66/928.11 = 234.18/x
  3. Step 3: Cross multiply
    618.66x = 928.11 × 234.18
  4. Step 4: Simplify right side
    618.66x = 217,344.80
  5. Step 5: Solve for x
    x = 217,344.80/618.66
  6. Step 6: Final answer
    x = 351.32

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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.