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Finding the Fourth Proportional to 43.99, 60.72 and 35.79

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Solution

The fourth proportional to 43.99, 60.72 and 35.79 is: 49.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.99 : 60.72 = 35.79 : x
  2. Step 2: Convert to fraction form
    43.99/60.72 = 35.79/x
  3. Step 3: Cross multiply
    43.99x = 60.72 × 35.79
  4. Step 4: Simplify right side
    43.99x = 2,173.17
  5. Step 5: Solve for x
    x = 2,173.17/43.99
  6. Step 6: Final answer
    x = 49.40

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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.