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Finding the Fourth Proportional to 41.14, 56.72 and 30.76

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Solution

The fourth proportional to 41.14, 56.72 and 30.76 is: 42.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.14 : 56.72 = 30.76 : x
  2. Step 2: Convert to fraction form
    41.14/56.72 = 30.76/x
  3. Step 3: Cross multiply
    41.14x = 56.72 × 30.76
  4. Step 4: Simplify right side
    41.14x = 1,744.71
  5. Step 5: Solve for x
    x = 1,744.71/41.14
  6. Step 6: Final answer
    x = 42.41

Related Problems

Find fourth proportional to 20.57, 28.36 and 15.38
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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.