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Finding the Fourth Proportional to 17.56, 26.15 and 17.50

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Solution

The fourth proportional to 17.56, 26.15 and 17.50 is: 26.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.56 : 26.15 = 17.50 : x
  2. Step 2: Convert to fraction form
    17.56/26.15 = 17.50/x
  3. Step 3: Cross multiply
    17.56x = 26.15 × 17.50
  4. Step 4: Simplify right side
    17.56x = 457.63
  5. Step 5: Solve for x
    x = 457.63/17.56
  6. Step 6: Final answer
    x = 26.06

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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.