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Finding the Fourth Proportional to 23.55, 32.45 and 21.46

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Solution

The fourth proportional to 23.55, 32.45 and 21.46 is: 29.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.55 : 32.45 = 21.46 : x
  2. Step 2: Convert to fraction form
    23.55/32.45 = 21.46/x
  3. Step 3: Cross multiply
    23.55x = 32.45 × 21.46
  4. Step 4: Simplify right side
    23.55x = 696.19
  5. Step 5: Solve for x
    x = 696.19/23.55
  6. Step 6: Final answer
    x = 29.56

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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.