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Finding the Fourth Proportional to 55.25, 76.27 and 33.13

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Solution

The fourth proportional to 55.25, 76.27 and 33.13 is: 45.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.25 : 76.27 = 33.13 : x
  2. Step 2: Convert to fraction form
    55.25/76.27 = 33.13/x
  3. Step 3: Cross multiply
    55.25x = 76.27 × 33.13
  4. Step 4: Simplify right side
    55.25x = 2,527.14
  5. Step 5: Solve for x
    x = 2,527.14/55.25
  6. Step 6: Final answer
    x = 45.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.