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Finding the Fourth Proportional to 503.17, 694.23 and 316.66

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Solution

The fourth proportional to 503.17, 694.23 and 316.66 is: 436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.17 : 694.23 = 316.66 : x
  2. Step 2: Convert to fraction form
    503.17/694.23 = 316.66/x
  3. Step 3: Cross multiply
    503.17x = 694.23 × 316.66
  4. Step 4: Simplify right side
    503.17x = 219,834.87
  5. Step 5: Solve for x
    x = 219,834.87/503.17
  6. Step 6: Final answer
    x = 436.90

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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.