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Finding the Fourth Proportional to 17.01, 23.36 and 15.80

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Solution

The fourth proportional to 17.01, 23.36 and 15.80 is: 21.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.01 : 23.36 = 15.80 : x
  2. Step 2: Convert to fraction form
    17.01/23.36 = 15.80/x
  3. Step 3: Cross multiply
    17.01x = 23.36 × 15.80
  4. Step 4: Simplify right side
    17.01x = 368.89
  5. Step 5: Solve for x
    x = 368.89/17.01
  6. Step 6: Final answer
    x = 21.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.