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Finding the Fourth Proportional to 59.05, 81.40 and 41.51

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Solution

The fourth proportional to 59.05, 81.40 and 41.51 is: 57.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.05 : 81.40 = 41.51 : x
  2. Step 2: Convert to fraction form
    59.05/81.40 = 41.51/x
  3. Step 3: Cross multiply
    59.05x = 81.40 × 41.51
  4. Step 4: Simplify right side
    59.05x = 3,378.40
  5. Step 5: Solve for x
    x = 3,378.40/59.05
  6. Step 6: Final answer
    x = 57.22

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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.