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Finding the Fourth Proportional to 1,238.22, 1,707.96 and 795.36

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Solution

The fourth proportional to 1,238.22, 1,707.96 and 795.36 is: 1,097.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238.22 : 1,707.96 = 795.36 : x
  2. Step 2: Convert to fraction form
    1,238.22/1,707.96 = 795.36/x
  3. Step 3: Cross multiply
    1,238.22x = 1,707.96 × 795.36
  4. Step 4: Simplify right side
    1,238.22x = 1,358,443.07
  5. Step 5: Solve for x
    x = 1,358,443.07/1,238.22
  6. Step 6: Final answer
    x = 1,097.09

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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.