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Finding the Fourth Proportional to 41.19, 56.81 and 30.25

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Solution

The fourth proportional to 41.19, 56.81 and 30.25 is: 41.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.19 : 56.81 = 30.25 : x
  2. Step 2: Convert to fraction form
    41.19/56.81 = 30.25/x
  3. Step 3: Cross multiply
    41.19x = 56.81 × 30.25
  4. Step 4: Simplify right side
    41.19x = 1,718.50
  5. Step 5: Solve for x
    x = 1,718.50/41.19
  6. Step 6: Final answer
    x = 41.72

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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.