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Finding the Fourth Proportional to 42.41, 58.50 and 36.20

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Solution

The fourth proportional to 42.41, 58.50 and 36.20 is: 49.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.41 : 58.50 = 36.20 : x
  2. Step 2: Convert to fraction form
    42.41/58.50 = 36.20/x
  3. Step 3: Cross multiply
    42.41x = 58.50 × 36.20
  4. Step 4: Simplify right side
    42.41x = 2,117.85
  5. Step 5: Solve for x
    x = 2,117.85/42.41
  6. Step 6: Final answer
    x = 49.94

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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.