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Finding the Fourth Proportional to 885.26, 1,326.98 and 495.42

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Solution

The fourth proportional to 885.26, 1,326.98 and 495.42 is: 742.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.26 : 1,326.98 = 495.42 : x
  2. Step 2: Convert to fraction form
    885.26/1,326.98 = 495.42/x
  3. Step 3: Cross multiply
    885.26x = 1,326.98 × 495.42
  4. Step 4: Simplify right side
    885.26x = 657,412.43
  5. Step 5: Solve for x
    x = 657,412.43/885.26
  6. Step 6: Final answer
    x = 742.62

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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.