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Finding the Fourth Proportional to 224.49, 336.81 and 87.57

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Solution

The fourth proportional to 224.49, 336.81 and 87.57 is: 131.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.49 : 336.81 = 87.57 : x
  2. Step 2: Convert to fraction form
    224.49/336.81 = 87.57/x
  3. Step 3: Cross multiply
    224.49x = 336.81 × 87.57
  4. Step 4: Simplify right side
    224.49x = 29,494.45
  5. Step 5: Solve for x
    x = 29,494.45/224.49
  6. Step 6: Final answer
    x = 131.38

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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.