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Finding the Fourth Proportional to 23.35, 32.22 and 15.57

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Solution

The fourth proportional to 23.35, 32.22 and 15.57 is: 21.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.35 : 32.22 = 15.57 : x
  2. Step 2: Convert to fraction form
    23.35/32.22 = 15.57/x
  3. Step 3: Cross multiply
    23.35x = 32.22 × 15.57
  4. Step 4: Simplify right side
    23.35x = 501.67
  5. Step 5: Solve for x
    x = 501.67/23.35
  6. Step 6: Final answer
    x = 21.49

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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.