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Finding the Fourth Proportional to 832.68, 1,145.88 and 808.44

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Solution

The fourth proportional to 832.68, 1,145.88 and 808.44 is: 1,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.68 : 1,145.88 = 808.44 : x
  2. Step 2: Convert to fraction form
    832.68/1,145.88 = 808.44/x
  3. Step 3: Cross multiply
    832.68x = 1,145.88 × 808.44
  4. Step 4: Simplify right side
    832.68x = 926,375.23
  5. Step 5: Solve for x
    x = 926,375.23/832.68
  6. Step 6: Final answer
    x = 1,112.52

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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.