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Finding the Fourth Proportional to 41.51, 57.29 and 29.21

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Solution

The fourth proportional to 41.51, 57.29 and 29.21 is: 40.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.51 : 57.29 = 29.21 : x
  2. Step 2: Convert to fraction form
    41.51/57.29 = 29.21/x
  3. Step 3: Cross multiply
    41.51x = 57.29 × 29.21
  4. Step 4: Simplify right side
    41.51x = 1,673.01
  5. Step 5: Solve for x
    x = 1,673.01/41.51
  6. Step 6: Final answer
    x = 40.31

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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.