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Finding the Fourth Proportional to 633.46, 949.15 and 386.73

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Solution

The fourth proportional to 633.46, 949.15 and 386.73 is: 579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.46 : 949.15 = 386.73 : x
  2. Step 2: Convert to fraction form
    633.46/949.15 = 386.73/x
  3. Step 3: Cross multiply
    633.46x = 949.15 × 386.73
  4. Step 4: Simplify right side
    633.46x = 367,064.78
  5. Step 5: Solve for x
    x = 367,064.78/633.46
  6. Step 6: Final answer
    x = 579.46

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.