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Finding the Fourth Proportional to 55.85, 83.80 and 27.35

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Solution

The fourth proportional to 55.85, 83.80 and 27.35 is: 41.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.85 : 83.80 = 27.35 : x
  2. Step 2: Convert to fraction form
    55.85/83.80 = 27.35/x
  3. Step 3: Cross multiply
    55.85x = 83.80 × 27.35
  4. Step 4: Simplify right side
    55.85x = 2,291.37
  5. Step 5: Solve for x
    x = 2,291.37/55.85
  6. Step 6: Final answer
    x = 41.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.