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Finding the Fourth Proportional to 40.91, 56.49 and 29.27

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Solution

The fourth proportional to 40.91, 56.49 and 29.27 is: 40.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.91 : 56.49 = 29.27 : x
  2. Step 2: Convert to fraction form
    40.91/56.49 = 29.27/x
  3. Step 3: Cross multiply
    40.91x = 56.49 × 29.27
  4. Step 4: Simplify right side
    40.91x = 1,653.46
  5. Step 5: Solve for x
    x = 1,653.46/40.91
  6. Step 6: Final answer
    x = 40.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.