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Finding the Fourth Proportional to 41.81, 62.64 and 30.35

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Solution

The fourth proportional to 41.81, 62.64 and 30.35 is: 45.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.81 : 62.64 = 30.35 : x
  2. Step 2: Convert to fraction form
    41.81/62.64 = 30.35/x
  3. Step 3: Cross multiply
    41.81x = 62.64 × 30.35
  4. Step 4: Simplify right side
    41.81x = 1,900.66
  5. Step 5: Solve for x
    x = 1,900.66/41.81
  6. Step 6: Final answer
    x = 45.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.