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Finding the Fourth Proportional to 503.05, 694.26 and 316.69

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Solution

The fourth proportional to 503.05, 694.26 and 316.69 is: 437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.05 : 694.26 = 316.69 : x
  2. Step 2: Convert to fraction form
    503.05/694.26 = 316.69/x
  3. Step 3: Cross multiply
    503.05x = 694.26 × 316.69
  4. Step 4: Simplify right side
    503.05x = 219,865.20
  5. Step 5: Solve for x
    x = 219,865.20/503.05
  6. Step 6: Final answer
    x = 437.06

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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.