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Finding the Fourth Proportional to 335.85, 498.12 and 330.99

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Solution

The fourth proportional to 335.85, 498.12 and 330.99 is: 490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.85 : 498.12 = 330.99 : x
  2. Step 2: Convert to fraction form
    335.85/498.12 = 330.99/x
  3. Step 3: Cross multiply
    335.85x = 498.12 × 330.99
  4. Step 4: Simplify right side
    335.85x = 164,872.74
  5. Step 5: Solve for x
    x = 164,872.74/335.85
  6. Step 6: Final answer
    x = 490.91

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.