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Finding the Fourth Proportional to 330.07, 495.07 and 98.96

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Solution

The fourth proportional to 330.07, 495.07 and 98.96 is: 148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.07 : 495.07 = 98.96 : x
  2. Step 2: Convert to fraction form
    330.07/495.07 = 98.96/x
  3. Step 3: Cross multiply
    330.07x = 495.07 × 98.96
  4. Step 4: Simplify right side
    330.07x = 48,992.13
  5. Step 5: Solve for x
    x = 48,992.13/330.07
  6. Step 6: Final answer
    x = 148.43

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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.