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Finding the Fourth Proportional to 854.87, 1,282.68 and 335.03

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Solution

The fourth proportional to 854.87, 1,282.68 and 335.03 is: 502.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.87 : 1,282.68 = 335.03 : x
  2. Step 2: Convert to fraction form
    854.87/1,282.68 = 335.03/x
  3. Step 3: Cross multiply
    854.87x = 1,282.68 × 335.03
  4. Step 4: Simplify right side
    854.87x = 429,736.28
  5. Step 5: Solve for x
    x = 429,736.28/854.87
  6. Step 6: Final answer
    x = 502.69

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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.