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Finding the Fourth Proportional to 43.48, 60 and 28.96

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Solution

The fourth proportional to 43.48, 60 and 28.96 is: 39.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.48 : 60 = 28.96 : x
  2. Step 2: Convert to fraction form
    43.48/60 = 28.96/x
  3. Step 3: Cross multiply
    43.48x = 60 × 28.96
  4. Step 4: Simplify right side
    43.48x = 1,737.60
  5. Step 5: Solve for x
    x = 1,737.60/43.48
  6. Step 6: Final answer
    x = 39.96

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1.5x scale

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.