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Finding the Fourth Proportional to 23.50, 32.45 and 15.33

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Solution

The fourth proportional to 23.50, 32.45 and 15.33 is: 21.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.50 : 32.45 = 15.33 : x
  2. Step 2: Convert to fraction form
    23.50/32.45 = 15.33/x
  3. Step 3: Cross multiply
    23.50x = 32.45 × 15.33
  4. Step 4: Simplify right side
    23.50x = 497.30
  5. Step 5: Solve for x
    x = 497.30/23.50
  6. Step 6: Final answer
    x = 21.16

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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.