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Finding the Fourth Proportional to 52.75, 78.66 and 49.03

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Solution

The fourth proportional to 52.75, 78.66 and 49.03 is: 73.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.75 : 78.66 = 49.03 : x
  2. Step 2: Convert to fraction form
    52.75/78.66 = 49.03/x
  3. Step 3: Cross multiply
    52.75x = 78.66 × 49.03
  4. Step 4: Simplify right side
    52.75x = 3,856.70
  5. Step 5: Solve for x
    x = 3,856.70/52.75
  6. Step 6: Final answer
    x = 73.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.