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Finding the Fourth Proportional to 832.91, 1,148.82 and 636.08

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Solution

The fourth proportional to 832.91, 1,148.82 and 636.08 is: 877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.91 : 1,148.82 = 636.08 : x
  2. Step 2: Convert to fraction form
    832.91/1,148.82 = 636.08/x
  3. Step 3: Cross multiply
    832.91x = 1,148.82 × 636.08
  4. Step 4: Simplify right side
    832.91x = 730,741.43
  5. Step 5: Solve for x
    x = 730,741.43/832.91
  6. Step 6: Final answer
    x = 877.34

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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.