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Finding the Fourth Proportional to 121.70, 182.56 and 35.03

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Solution

The fourth proportional to 121.70, 182.56 and 35.03 is: 52.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.70 : 182.56 = 35.03 : x
  2. Step 2: Convert to fraction form
    121.70/182.56 = 35.03/x
  3. Step 3: Cross multiply
    121.70x = 182.56 × 35.03
  4. Step 4: Simplify right side
    121.70x = 6,393.99
  5. Step 5: Solve for x
    x = 6,393.99/121.70
  6. Step 6: Final answer
    x = 52.54

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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.