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Finding the Fourth Proportional to 892.07, 1,336.32 and 520.82

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Solution

The fourth proportional to 892.07, 1,336.32 and 520.82 is: 780.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.07 : 1,336.32 = 520.82 : x
  2. Step 2: Convert to fraction form
    892.07/1,336.32 = 520.82/x
  3. Step 3: Cross multiply
    892.07x = 1,336.32 × 520.82
  4. Step 4: Simplify right side
    892.07x = 695,975.50
  5. Step 5: Solve for x
    x = 695,975.50/892.07
  6. Step 6: Final answer
    x = 780.18

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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.