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Finding the Fourth Proportional to 506.79, 759.62 and 214.20

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Solution

The fourth proportional to 506.79, 759.62 and 214.20 is: 321.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.79 : 759.62 = 214.20 : x
  2. Step 2: Convert to fraction form
    506.79/759.62 = 214.20/x
  3. Step 3: Cross multiply
    506.79x = 759.62 × 214.20
  4. Step 4: Simplify right side
    506.79x = 162,709.53
  5. Step 5: Solve for x
    x = 162,709.53/506.79
  6. Step 6: Final answer
    x = 321.06

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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.