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Finding the Fourth Proportional to 838.48, 1,249.22 and 797.17

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Solution

The fourth proportional to 838.48, 1,249.22 and 797.17 is: 1,187.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    838.48 : 1,249.22 = 797.17 : x
  2. Step 2: Convert to fraction form
    838.48/1,249.22 = 797.17/x
  3. Step 3: Cross multiply
    838.48x = 1,249.22 × 797.17
  4. Step 4: Simplify right side
    838.48x = 995,840.71
  5. Step 5: Solve for x
    x = 995,840.71/838.48
  6. Step 6: Final answer
    x = 1,187.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.