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Finding the Fourth Proportional to 26.48, 36.58 and 21.92

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Solution

The fourth proportional to 26.48, 36.58 and 21.92 is: 30.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.48 : 36.58 = 21.92 : x
  2. Step 2: Convert to fraction form
    26.48/36.58 = 21.92/x
  3. Step 3: Cross multiply
    26.48x = 36.58 × 21.92
  4. Step 4: Simplify right side
    26.48x = 801.83
  5. Step 5: Solve for x
    x = 801.83/26.48
  6. Step 6: Final answer
    x = 30.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.