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Finding the Fourth Proportional to 98.73, 148.14 and 50.67

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Solution

The fourth proportional to 98.73, 148.14 and 50.67 is: 76.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.73 : 148.14 = 50.67 : x
  2. Step 2: Convert to fraction form
    98.73/148.14 = 50.67/x
  3. Step 3: Cross multiply
    98.73x = 148.14 × 50.67
  4. Step 4: Simplify right side
    98.73x = 7,506.25
  5. Step 5: Solve for x
    x = 7,506.25/98.73
  6. Step 6: Final answer
    x = 76.03

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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.