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Finding the Fourth Proportional to 55.60, 76.75 and 33.77

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Solution

The fourth proportional to 55.60, 76.75 and 33.77 is: 46.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.60 : 76.75 = 33.77 : x
  2. Step 2: Convert to fraction form
    55.60/76.75 = 33.77/x
  3. Step 3: Cross multiply
    55.60x = 76.75 × 33.77
  4. Step 4: Simplify right side
    55.60x = 2,591.95
  5. Step 5: Solve for x
    x = 2,591.95/55.60
  6. Step 6: Final answer
    x = 46.62

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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.