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Finding the Fourth Proportional to 43.90, 60.66 and 35.20

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Solution

The fourth proportional to 43.90, 60.66 and 35.20 is: 48.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.90 : 60.66 = 35.20 : x
  2. Step 2: Convert to fraction form
    43.90/60.66 = 35.20/x
  3. Step 3: Cross multiply
    43.90x = 60.66 × 35.20
  4. Step 4: Simplify right side
    43.90x = 2,135.23
  5. Step 5: Solve for x
    x = 2,135.23/43.90
  6. Step 6: Final answer
    x = 48.64

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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.