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Finding the Fourth Proportional to 224.94, 337.39 and 78.67

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Solution

The fourth proportional to 224.94, 337.39 and 78.67 is: 117.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.94 : 337.39 = 78.67 : x
  2. Step 2: Convert to fraction form
    224.94/337.39 = 78.67/x
  3. Step 3: Cross multiply
    224.94x = 337.39 × 78.67
  4. Step 4: Simplify right side
    224.94x = 26,541.43
  5. Step 5: Solve for x
    x = 26,541.43/224.94
  6. Step 6: Final answer
    x = 117.99

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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.