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Finding the Fourth Proportional to 43.35, 64.99 and 17.66

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Solution

The fourth proportional to 43.35, 64.99 and 17.66 is: 26.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.35 : 64.99 = 17.66 : x
  2. Step 2: Convert to fraction form
    43.35/64.99 = 17.66/x
  3. Step 3: Cross multiply
    43.35x = 64.99 × 17.66
  4. Step 4: Simplify right side
    43.35x = 1,147.72
  5. Step 5: Solve for x
    x = 1,147.72/43.35
  6. Step 6: Final answer
    x = 26.48

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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.