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Finding the Fourth Proportional to 17.63, 26.28 and 14.57

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Solution

The fourth proportional to 17.63, 26.28 and 14.57 is: 21.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.63 : 26.28 = 14.57 : x
  2. Step 2: Convert to fraction form
    17.63/26.28 = 14.57/x
  3. Step 3: Cross multiply
    17.63x = 26.28 × 14.57
  4. Step 4: Simplify right side
    17.63x = 382.90
  5. Step 5: Solve for x
    x = 382.90/17.63
  6. Step 6: Final answer
    x = 21.72

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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.