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Finding the Fourth Proportional to 503.31, 754.65 and 214.50

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Solution

The fourth proportional to 503.31, 754.65 and 214.50 is: 321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.31 : 754.65 = 214.50 : x
  2. Step 2: Convert to fraction form
    503.31/754.65 = 214.50/x
  3. Step 3: Cross multiply
    503.31x = 754.65 × 214.50
  4. Step 4: Simplify right side
    503.31x = 161,872.43
  5. Step 5: Solve for x
    x = 161,872.43/503.31
  6. Step 6: Final answer
    x = 321.62

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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.