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Finding the Fourth Proportional to 224.91, 310.32 and 137.52

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Solution

The fourth proportional to 224.91, 310.32 and 137.52 is: 189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.91 : 310.32 = 137.52 : x
  2. Step 2: Convert to fraction form
    224.91/310.32 = 137.52/x
  3. Step 3: Cross multiply
    224.91x = 310.32 × 137.52
  4. Step 4: Simplify right side
    224.91x = 42,675.21
  5. Step 5: Solve for x
    x = 42,675.21/224.91
  6. Step 6: Final answer
    x = 189.74

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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.