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Finding the Fourth Proportional to 484.96, 669.07 and 319.27

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Solution

The fourth proportional to 484.96, 669.07 and 319.27 is: 440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.96 : 669.07 = 319.27 : x
  2. Step 2: Convert to fraction form
    484.96/669.07 = 319.27/x
  3. Step 3: Cross multiply
    484.96x = 669.07 × 319.27
  4. Step 4: Simplify right side
    484.96x = 213,613.98
  5. Step 5: Solve for x
    x = 213,613.98/484.96
  6. Step 6: Final answer
    x = 440.48

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.