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Finding the Fourth Proportional to 484.97, 669.42 and 374.31

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Solution

The fourth proportional to 484.97, 669.42 and 374.31 is: 516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.97 : 669.42 = 374.31 : x
  2. Step 2: Convert to fraction form
    484.97/669.42 = 374.31/x
  3. Step 3: Cross multiply
    484.97x = 669.42 × 374.31
  4. Step 4: Simplify right side
    484.97x = 250,570.60
  5. Step 5: Solve for x
    x = 250,570.60/484.97
  6. Step 6: Final answer
    x = 516.68

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1.5x scale

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.