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Finding the Fourth Proportional to 1,494.02, 2,061.86 and 831.08

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Solution

The fourth proportional to 1,494.02, 2,061.86 and 831.08 is: 1,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.02 : 2,061.86 = 831.08 : x
  2. Step 2: Convert to fraction form
    1,494.02/2,061.86 = 831.08/x
  3. Step 3: Cross multiply
    1,494.02x = 2,061.86 × 831.08
  4. Step 4: Simplify right side
    1,494.02x = 1,713,571.61
  5. Step 5: Solve for x
    x = 1,713,571.61/1,494.02
  6. Step 6: Final answer
    x = 1,146.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.