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Finding the Fourth Proportional to 846.85, 1,168 and 637.09

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Solution

The fourth proportional to 846.85, 1,168 and 637.09 is: 878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.85 : 1,168 = 637.09 : x
  2. Step 2: Convert to fraction form
    846.85/1,168 = 637.09/x
  3. Step 3: Cross multiply
    846.85x = 1,168 × 637.09
  4. Step 4: Simplify right side
    846.85x = 744,121.12
  5. Step 5: Solve for x
    x = 744,121.12/846.85
  6. Step 6: Final answer
    x = 878.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.