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Finding the Fourth Proportional to 42.94, 59.31 and 26.58

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Solution

The fourth proportional to 42.94, 59.31 and 26.58 is: 36.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.94 : 59.31 = 26.58 : x
  2. Step 2: Convert to fraction form
    42.94/59.31 = 26.58/x
  3. Step 3: Cross multiply
    42.94x = 59.31 × 26.58
  4. Step 4: Simplify right side
    42.94x = 1,576.27
  5. Step 5: Solve for x
    x = 1,576.27/42.94
  6. Step 6: Final answer
    x = 36.71

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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.