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Finding the Fourth Proportional to 93.50, 139.41 and 92.28

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Solution

The fourth proportional to 93.50, 139.41 and 92.28 is: 137.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.50 : 139.41 = 92.28 : x
  2. Step 2: Convert to fraction form
    93.50/139.41 = 92.28/x
  3. Step 3: Cross multiply
    93.50x = 139.41 × 92.28
  4. Step 4: Simplify right side
    93.50x = 12,864.29
  5. Step 5: Solve for x
    x = 12,864.29/93.50
  6. Step 6: Final answer
    x = 137.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.