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Finding the Fourth Proportional to 503.70, 694.45 and 326.34

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Solution

The fourth proportional to 503.70, 694.45 and 326.34 is: 449.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.70 : 694.45 = 326.34 : x
  2. Step 2: Convert to fraction form
    503.70/694.45 = 326.34/x
  3. Step 3: Cross multiply
    503.70x = 694.45 × 326.34
  4. Step 4: Simplify right side
    503.70x = 226,626.81
  5. Step 5: Solve for x
    x = 226,626.81/503.70
  6. Step 6: Final answer
    x = 449.92

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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.