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Finding the Fourth Proportional to 854.91, 1,282.71 and 334.95

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Solution

The fourth proportional to 854.91, 1,282.71 and 334.95 is: 502.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.91 : 1,282.71 = 334.95 : x
  2. Step 2: Convert to fraction form
    854.91/1,282.71 = 334.95/x
  3. Step 3: Cross multiply
    854.91x = 1,282.71 × 334.95
  4. Step 4: Simplify right side
    854.91x = 429,643.71
  5. Step 5: Solve for x
    x = 429,643.71/854.91
  6. Step 6: Final answer
    x = 502.56

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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.