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Finding the Fourth Proportional to 831.06, 1,244.34 and 556.56

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Solution

The fourth proportional to 831.06, 1,244.34 and 556.56 is: 833.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    831.06 : 1,244.34 = 556.56 : x
  2. Step 2: Convert to fraction form
    831.06/1,244.34 = 556.56/x
  3. Step 3: Cross multiply
    831.06x = 1,244.34 × 556.56
  4. Step 4: Simplify right side
    831.06x = 692,549.87
  5. Step 5: Solve for x
    x = 692,549.87/831.06
  6. Step 6: Final answer
    x = 833.33

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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.