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Finding the Fourth Proportional to 43.66, 59.86 and 42.89

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Solution

The fourth proportional to 43.66, 59.86 and 42.89 is: 58.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.66 : 59.86 = 42.89 : x
  2. Step 2: Convert to fraction form
    43.66/59.86 = 42.89/x
  3. Step 3: Cross multiply
    43.66x = 59.86 × 42.89
  4. Step 4: Simplify right side
    43.66x = 2,566.88
  5. Step 5: Solve for x
    x = 2,566.88/43.66
  6. Step 6: Final answer
    x = 58.80

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.