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Finding the Fourth Proportional to 98.02, 134.93 and 83.93

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Solution

The fourth proportional to 98.02, 134.93 and 83.93 is: 115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.02 : 134.93 = 83.93 : x
  2. Step 2: Convert to fraction form
    98.02/134.93 = 83.93/x
  3. Step 3: Cross multiply
    98.02x = 134.93 × 83.93
  4. Step 4: Simplify right side
    98.02x = 11,324.26
  5. Step 5: Solve for x
    x = 11,324.26/98.02
  6. Step 6: Final answer
    x = 115.54

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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.