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Finding the Fourth Proportional to 818.60, 1,126.86 and 622.04

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Solution

The fourth proportional to 818.60, 1,126.86 and 622.04 is: 856.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.60 : 1,126.86 = 622.04 : x
  2. Step 2: Convert to fraction form
    818.60/1,126.86 = 622.04/x
  3. Step 3: Cross multiply
    818.60x = 1,126.86 × 622.04
  4. Step 4: Simplify right side
    818.60x = 700,951.99
  5. Step 5: Solve for x
    x = 700,951.99/818.60
  6. Step 6: Final answer
    x = 856.28

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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.