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Finding the Fourth Proportional to 17.73, 26.43 and 17.55

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Solution

The fourth proportional to 17.73, 26.43 and 17.55 is: 26.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.73 : 26.43 = 17.55 : x
  2. Step 2: Convert to fraction form
    17.73/26.43 = 17.55/x
  3. Step 3: Cross multiply
    17.73x = 26.43 × 17.55
  4. Step 4: Simplify right side
    17.73x = 463.85
  5. Step 5: Solve for x
    x = 463.85/17.73
  6. Step 6: Final answer
    x = 26.16

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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.