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Finding the Fourth Proportional to 40.16, 55.08 and 37.83

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Solution

The fourth proportional to 40.16, 55.08 and 37.83 is: 51.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.16 : 55.08 = 37.83 : x
  2. Step 2: Convert to fraction form
    40.16/55.08 = 37.83/x
  3. Step 3: Cross multiply
    40.16x = 55.08 × 37.83
  4. Step 4: Simplify right side
    40.16x = 2,083.68
  5. Step 5: Solve for x
    x = 2,083.68/40.16
  6. Step 6: Final answer
    x = 51.89

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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.