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Finding the Fourth Proportional to 361.02, 498.17 and 213.65

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Solution

The fourth proportional to 361.02, 498.17 and 213.65 is: 294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.02 : 498.17 = 213.65 : x
  2. Step 2: Convert to fraction form
    361.02/498.17 = 213.65/x
  3. Step 3: Cross multiply
    361.02x = 498.17 × 213.65
  4. Step 4: Simplify right side
    361.02x = 106,430.46
  5. Step 5: Solve for x
    x = 106,430.46/361.02
  6. Step 6: Final answer
    x = 294.80

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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.