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Finding the Fourth Proportional to 822.87, 1,134.27 and 656.82

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Solution

The fourth proportional to 822.87, 1,134.27 and 656.82 is: 905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.87 : 1,134.27 = 656.82 : x
  2. Step 2: Convert to fraction form
    822.87/1,134.27 = 656.82/x
  3. Step 3: Cross multiply
    822.87x = 1,134.27 × 656.82
  4. Step 4: Simplify right side
    822.87x = 745,011.22
  5. Step 5: Solve for x
    x = 745,011.22/822.87
  6. Step 6: Final answer
    x = 905.38

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Why These Related Problems?

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