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Finding the Fourth Proportional to 503.71, 754.34 and 445.99

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Solution

The fourth proportional to 503.71, 754.34 and 445.99 is: 667.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.71 : 754.34 = 445.99 : x
  2. Step 2: Convert to fraction form
    503.71/754.34 = 445.99/x
  3. Step 3: Cross multiply
    503.71x = 754.34 × 445.99
  4. Step 4: Simplify right side
    503.71x = 336,428.10
  5. Step 5: Solve for x
    x = 336,428.10/503.71
  6. Step 6: Final answer
    x = 667.90

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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.