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Finding the Fourth Proportional to 44.07, 65.61 and 42.81

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Solution

The fourth proportional to 44.07, 65.61 and 42.81 is: 63.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.07 : 65.61 = 42.81 : x
  2. Step 2: Convert to fraction form
    44.07/65.61 = 42.81/x
  3. Step 3: Cross multiply
    44.07x = 65.61 × 42.81
  4. Step 4: Simplify right side
    44.07x = 2,808.76
  5. Step 5: Solve for x
    x = 2,808.76/44.07
  6. Step 6: Final answer
    x = 63.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.