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Finding the Fourth Proportional to 43.46, 65.09 and 40.93

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Solution

The fourth proportional to 43.46, 65.09 and 40.93 is: 61.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.46 : 65.09 = 40.93 : x
  2. Step 2: Convert to fraction form
    43.46/65.09 = 40.93/x
  3. Step 3: Cross multiply
    43.46x = 65.09 × 40.93
  4. Step 4: Simplify right side
    43.46x = 2,663.84
  5. Step 5: Solve for x
    x = 2,663.84/43.46
  6. Step 6: Final answer
    x = 61.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.