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Finding the Fourth Proportional to 16.56, 22.55 and 16.43

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Solution

The fourth proportional to 16.56, 22.55 and 16.43 is: 22.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.56 : 22.55 = 16.43 : x
  2. Step 2: Convert to fraction form
    16.56/22.55 = 16.43/x
  3. Step 3: Cross multiply
    16.56x = 22.55 × 16.43
  4. Step 4: Simplify right side
    16.56x = 370.30
  5. Step 5: Solve for x
    x = 370.30/16.56
  6. Step 6: Final answer
    x = 22.36

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.