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Finding the Fourth Proportional to 362.16, 499.79 and 206.91

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Solution

The fourth proportional to 362.16, 499.79 and 206.91 is: 285.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.16 : 499.79 = 206.91 : x
  2. Step 2: Convert to fraction form
    362.16/499.79 = 206.91/x
  3. Step 3: Cross multiply
    362.16x = 499.79 × 206.91
  4. Step 4: Simplify right side
    362.16x = 103,410.51
  5. Step 5: Solve for x
    x = 103,410.51/362.16
  6. Step 6: Final answer
    x = 285.54

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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.