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Finding the Fourth Proportional to 896.09, 1,343.03 and 571.55

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Solution

The fourth proportional to 896.09, 1,343.03 and 571.55 is: 856.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.09 : 1,343.03 = 571.55 : x
  2. Step 2: Convert to fraction form
    896.09/1,343.03 = 571.55/x
  3. Step 3: Cross multiply
    896.09x = 1,343.03 × 571.55
  4. Step 4: Simplify right side
    896.09x = 767,599.22
  5. Step 5: Solve for x
    x = 767,599.22/896.09
  6. Step 6: Final answer
    x = 856.61

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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.