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Finding the Fourth Proportional to 42.07, 58.38 and 41.11

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Solution

The fourth proportional to 42.07, 58.38 and 41.11 is: 57.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.07 : 58.38 = 41.11 : x
  2. Step 2: Convert to fraction form
    42.07/58.38 = 41.11/x
  3. Step 3: Cross multiply
    42.07x = 58.38 × 41.11
  4. Step 4: Simplify right side
    42.07x = 2,400.00
  5. Step 5: Solve for x
    x = 2,400.00/42.07
  6. Step 6: Final answer
    x = 57.05

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.