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Finding the Fourth Proportional to 330.09, 494.83 and 124.50

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Solution

The fourth proportional to 330.09, 494.83 and 124.50 is: 186.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.09 : 494.83 = 124.50 : x
  2. Step 2: Convert to fraction form
    330.09/494.83 = 124.50/x
  3. Step 3: Cross multiply
    330.09x = 494.83 × 124.50
  4. Step 4: Simplify right side
    330.09x = 61,606.34
  5. Step 5: Solve for x
    x = 61,606.34/330.09
  6. Step 6: Final answer
    x = 186.63

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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.