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Finding the Fourth Proportional to 863.00, 1,191.01 and 490.10

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Solution

The fourth proportional to 863.00, 1,191.01 and 490.10 is: 676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.00 : 1,191.01 = 490.10 : x
  2. Step 2: Convert to fraction form
    863.00/1,191.01 = 490.10/x
  3. Step 3: Cross multiply
    863.00x = 1,191.01 × 490.10
  4. Step 4: Simplify right side
    863.00x = 583,706.82
  5. Step 5: Solve for x
    x = 583,706.82/863.00
  6. Step 6: Final answer
    x = 676.37

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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.