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Finding the Fourth Proportional to 886.13, 1,329.09 and 236.91

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Solution

The fourth proportional to 886.13, 1,329.09 and 236.91 is: 355.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.13 : 1,329.09 = 236.91 : x
  2. Step 2: Convert to fraction form
    886.13/1,329.09 = 236.91/x
  3. Step 3: Cross multiply
    886.13x = 1,329.09 × 236.91
  4. Step 4: Simplify right side
    886.13x = 314,880.14
  5. Step 5: Solve for x
    x = 314,880.14/886.13
  6. Step 6: Final answer
    x = 355.34

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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.