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Finding the Fourth Proportional to 1,332.07, 1,838.43 and 808.09

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Solution

The fourth proportional to 1,332.07, 1,838.43 and 808.09 is: 1,115.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.07 : 1,838.43 = 808.09 : x
  2. Step 2: Convert to fraction form
    1,332.07/1,838.43 = 808.09/x
  3. Step 3: Cross multiply
    1,332.07x = 1,838.43 × 808.09
  4. Step 4: Simplify right side
    1,332.07x = 1,485,616.90
  5. Step 5: Solve for x
    x = 1,485,616.90/1,332.07
  6. Step 6: Final answer
    x = 1,115.27

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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.