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Finding the Fourth Proportional to 333.52, 498.08 and 279

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Solution

The fourth proportional to 333.52, 498.08 and 279 is: 416.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.52 : 498.08 = 279 : x
  2. Step 2: Convert to fraction form
    333.52/498.08 = 279/x
  3. Step 3: Cross multiply
    333.52x = 498.08 × 279
  4. Step 4: Simplify right side
    333.52x = 138,964.32
  5. Step 5: Solve for x
    x = 138,964.32/333.52
  6. Step 6: Final answer
    x = 416.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.