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Finding the Fourth Proportional to 23.58, 32.48 and 21.82

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Solution

The fourth proportional to 23.58, 32.48 and 21.82 is: 30.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.58 : 32.48 = 21.82 : x
  2. Step 2: Convert to fraction form
    23.58/32.48 = 21.82/x
  3. Step 3: Cross multiply
    23.58x = 32.48 × 21.82
  4. Step 4: Simplify right side
    23.58x = 708.71
  5. Step 5: Solve for x
    x = 708.71/23.58
  6. Step 6: Final answer
    x = 30.06

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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.