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Finding the Fourth Proportional to 32.04, 43.80 and 31.92

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Solution

The fourth proportional to 32.04, 43.80 and 31.92 is: 43.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.04 : 43.80 = 31.92 : x
  2. Step 2: Convert to fraction form
    32.04/43.80 = 31.92/x
  3. Step 3: Cross multiply
    32.04x = 43.80 × 31.92
  4. Step 4: Simplify right side
    32.04x = 1,398.10
  5. Step 5: Solve for x
    x = 1,398.10/32.04
  6. Step 6: Final answer
    x = 43.64

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.