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Finding the Fourth Proportional to 93.72, 140.38 and 44.90

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Solution

The fourth proportional to 93.72, 140.38 and 44.90 is: 67.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.72 : 140.38 = 44.90 : x
  2. Step 2: Convert to fraction form
    93.72/140.38 = 44.90/x
  3. Step 3: Cross multiply
    93.72x = 140.38 × 44.90
  4. Step 4: Simplify right side
    93.72x = 6,302.77
  5. Step 5: Solve for x
    x = 6,302.77/93.72
  6. Step 6: Final answer
    x = 67.25

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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.