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Finding the Fourth Proportional to 32.09, 48.38 and 31.17

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Solution

The fourth proportional to 32.09, 48.38 and 31.17 is: 47.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.09 : 48.38 = 31.17 : x
  2. Step 2: Convert to fraction form
    32.09/48.38 = 31.17/x
  3. Step 3: Cross multiply
    32.09x = 48.38 × 31.17
  4. Step 4: Simplify right side
    32.09x = 1,507.85
  5. Step 5: Solve for x
    x = 1,507.85/32.09
  6. Step 6: Final answer
    x = 47.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.