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Finding the Fourth Proportional to 494.70, 677.72 and 476.23

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Solution

The fourth proportional to 494.70, 677.72 and 476.23 is: 652.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.70 : 677.72 = 476.23 : x
  2. Step 2: Convert to fraction form
    494.70/677.72 = 476.23/x
  3. Step 3: Cross multiply
    494.70x = 677.72 × 476.23
  4. Step 4: Simplify right side
    494.70x = 322,750.60
  5. Step 5: Solve for x
    x = 322,750.60/494.70
  6. Step 6: Final answer
    x = 652.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.