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Finding the Fourth Proportional to 484.28, 669.48 and 463.88

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Solution

The fourth proportional to 484.28, 669.48 and 463.88 is: 641.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.28 : 669.48 = 463.88 : x
  2. Step 2: Convert to fraction form
    484.28/669.48 = 463.88/x
  3. Step 3: Cross multiply
    484.28x = 669.48 × 463.88
  4. Step 4: Simplify right side
    484.28x = 310,558.38
  5. Step 5: Solve for x
    x = 310,558.38/484.28
  6. Step 6: Final answer
    x = 641.28

Related Problems

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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.