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Finding the Fourth Proportional to 496.90, 684.34 and 486.14

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Solution

The fourth proportional to 496.90, 684.34 and 486.14 is: 669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.90 : 684.34 = 486.14 : x
  2. Step 2: Convert to fraction form
    496.90/684.34 = 486.14/x
  3. Step 3: Cross multiply
    496.90x = 684.34 × 486.14
  4. Step 4: Simplify right side
    496.90x = 332,682.62
  5. Step 5: Solve for x
    x = 332,682.62/496.90
  6. Step 6: Final answer
    x = 669.52

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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.