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Finding the Fourth Proportional to 330.96, 496.68 and 245.68

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Solution

The fourth proportional to 330.96, 496.68 and 245.68 is: 368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.96 : 496.68 = 245.68 : x
  2. Step 2: Convert to fraction form
    330.96/496.68 = 245.68/x
  3. Step 3: Cross multiply
    330.96x = 496.68 × 245.68
  4. Step 4: Simplify right side
    330.96x = 122,024.34
  5. Step 5: Solve for x
    x = 122,024.34/330.96
  6. Step 6: Final answer
    x = 368.70

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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.