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Finding the Fourth Proportional to 618.72, 928.32 and 234.24

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Solution

The fourth proportional to 618.72, 928.32 and 234.24 is: 351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.72 : 928.32 = 234.24 : x
  2. Step 2: Convert to fraction form
    618.72/928.32 = 234.24/x
  3. Step 3: Cross multiply
    618.72x = 928.32 × 234.24
  4. Step 4: Simplify right side
    618.72x = 217,449.68
  5. Step 5: Solve for x
    x = 217,449.68/618.72
  6. Step 6: Final answer
    x = 351.45

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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.