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Finding the Fourth Proportional to 330.01, 494.89 and 98.84

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Solution

The fourth proportional to 330.01, 494.89 and 98.84 is: 148.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.01 : 494.89 = 98.84 : x
  2. Step 2: Convert to fraction form
    330.01/494.89 = 98.84/x
  3. Step 3: Cross multiply
    330.01x = 494.89 × 98.84
  4. Step 4: Simplify right side
    330.01x = 48,914.93
  5. Step 5: Solve for x
    x = 48,914.93/330.01
  6. Step 6: Final answer
    x = 148.22

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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.