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Finding the Fourth Proportional to 563.82, 778.53 and 494.66

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Solution

The fourth proportional to 563.82, 778.53 and 494.66 is: 683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.82 : 778.53 = 494.66 : x
  2. Step 2: Convert to fraction form
    563.82/778.53 = 494.66/x
  3. Step 3: Cross multiply
    563.82x = 778.53 × 494.66
  4. Step 4: Simplify right side
    563.82x = 385,103.76
  5. Step 5: Solve for x
    x = 385,103.76/563.82
  6. Step 6: Final answer
    x = 683.03

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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.