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Finding the Fourth Proportional to 93.26, 127.94 and 90.86

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Solution

The fourth proportional to 93.26, 127.94 and 90.86 is: 124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.26 : 127.94 = 90.86 : x
  2. Step 2: Convert to fraction form
    93.26/127.94 = 90.86/x
  3. Step 3: Cross multiply
    93.26x = 127.94 × 90.86
  4. Step 4: Simplify right side
    93.26x = 11,624.63
  5. Step 5: Solve for x
    x = 11,624.63/93.26
  6. Step 6: Final answer
    x = 124.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.