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Finding the Fourth Proportional to 1,326.96, 1,831.06 and 767.35

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Solution

The fourth proportional to 1,326.96, 1,831.06 and 767.35 is: 1,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.96 : 1,831.06 = 767.35 : x
  2. Step 2: Convert to fraction form
    1,326.96/1,831.06 = 767.35/x
  3. Step 3: Cross multiply
    1,326.96x = 1,831.06 × 767.35
  4. Step 4: Simplify right side
    1,326.96x = 1,405,060.27
  5. Step 5: Solve for x
    x = 1,405,060.27/1,326.96
  6. Step 6: Final answer
    x = 1,058.85

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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.