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Finding the Fourth Proportional to 250.02, 374.74 and 128.02

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Solution

The fourth proportional to 250.02, 374.74 and 128.02 is: 191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.02 : 374.74 = 128.02 : x
  2. Step 2: Convert to fraction form
    250.02/374.74 = 128.02/x
  3. Step 3: Cross multiply
    250.02x = 374.74 × 128.02
  4. Step 4: Simplify right side
    250.02x = 47,974.21
  5. Step 5: Solve for x
    x = 47,974.21/250.02
  6. Step 6: Final answer
    x = 191.88

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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.