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Finding the Fourth Proportional to 618.42, 927.16 and 228.25

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Solution

The fourth proportional to 618.42, 927.16 and 228.25 is: 342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.42 : 927.16 = 228.25 : x
  2. Step 2: Convert to fraction form
    618.42/927.16 = 228.25/x
  3. Step 3: Cross multiply
    618.42x = 927.16 × 228.25
  4. Step 4: Simplify right side
    618.42x = 211,624.27
  5. Step 5: Solve for x
    x = 211,624.27/618.42
  6. Step 6: Final answer
    x = 342.20

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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.