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Finding the Fourth Proportional to 614.94, 922.79 and 268.28

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Solution

The fourth proportional to 614.94, 922.79 and 268.28 is: 402.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.94 : 922.79 = 268.28 : x
  2. Step 2: Convert to fraction form
    614.94/922.79 = 268.28/x
  3. Step 3: Cross multiply
    614.94x = 922.79 × 268.28
  4. Step 4: Simplify right side
    614.94x = 247,565.62
  5. Step 5: Solve for x
    x = 247,565.62/614.94
  6. Step 6: Final answer
    x = 402.59

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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.