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Finding the Fourth Proportional to 843.98, 1,266.46 and 474.08

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Solution

The fourth proportional to 843.98, 1,266.46 and 474.08 is: 711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.98 : 1,266.46 = 474.08 : x
  2. Step 2: Convert to fraction form
    843.98/1,266.46 = 474.08/x
  3. Step 3: Cross multiply
    843.98x = 1,266.46 × 474.08
  4. Step 4: Simplify right side
    843.98x = 600,403.36
  5. Step 5: Solve for x
    x = 600,403.36/843.98
  6. Step 6: Final answer
    x = 711.40

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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.