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Finding the Fourth Proportional to 227.66, 314.24 and 153.95

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Solution

The fourth proportional to 227.66, 314.24 and 153.95 is: 212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.66 : 314.24 = 153.95 : x
  2. Step 2: Convert to fraction form
    227.66/314.24 = 153.95/x
  3. Step 3: Cross multiply
    227.66x = 314.24 × 153.95
  4. Step 4: Simplify right side
    227.66x = 48,374.91
  5. Step 5: Solve for x
    x = 48,374.91/227.66
  6. Step 6: Final answer
    x = 212.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.