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Finding the Fourth Proportional to 486.99, 671.79 and 362.25

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Solution

The fourth proportional to 486.99, 671.79 and 362.25 is: 499.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.99 : 671.79 = 362.25 : x
  2. Step 2: Convert to fraction form
    486.99/671.79 = 362.25/x
  3. Step 3: Cross multiply
    486.99x = 671.79 × 362.25
  4. Step 4: Simplify right side
    486.99x = 243,355.93
  5. Step 5: Solve for x
    x = 243,355.93/486.99
  6. Step 6: Final answer
    x = 499.71

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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.