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Finding the Fourth Proportional to 77.53, 116.35 and 36.96

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Solution

The fourth proportional to 77.53, 116.35 and 36.96 is: 55.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.53 : 116.35 = 36.96 : x
  2. Step 2: Convert to fraction form
    77.53/116.35 = 36.96/x
  3. Step 3: Cross multiply
    77.53x = 116.35 × 36.96
  4. Step 4: Simplify right side
    77.53x = 4,299.77
  5. Step 5: Solve for x
    x = 4,299.77/77.53
  6. Step 6: Final answer
    x = 55.46

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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.