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Finding the Fourth Proportional to 32.72, 48.86 and 27.88

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Solution

The fourth proportional to 32.72, 48.86 and 27.88 is: 41.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.72 : 48.86 = 27.88 : x
  2. Step 2: Convert to fraction form
    32.72/48.86 = 27.88/x
  3. Step 3: Cross multiply
    32.72x = 48.86 × 27.88
  4. Step 4: Simplify right side
    32.72x = 1,362.16
  5. Step 5: Solve for x
    x = 1,362.16/32.72
  6. Step 6: Final answer
    x = 41.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.