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Finding the Fourth Proportional to 93.30, 140.67 and 92.28

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Solution

The fourth proportional to 93.30, 140.67 and 92.28 is: 139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.30 : 140.67 = 92.28 : x
  2. Step 2: Convert to fraction form
    93.30/140.67 = 92.28/x
  3. Step 3: Cross multiply
    93.30x = 140.67 × 92.28
  4. Step 4: Simplify right side
    93.30x = 12,981.03
  5. Step 5: Solve for x
    x = 12,981.03/93.30
  6. Step 6: Final answer
    x = 139.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.