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Finding the Fourth Proportional to 397.68, 594 and 316.27

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Solution

The fourth proportional to 397.68, 594 and 316.27 is: 472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.68 : 594 = 316.27 : x
  2. Step 2: Convert to fraction form
    397.68/594 = 316.27/x
  3. Step 3: Cross multiply
    397.68x = 594 × 316.27
  4. Step 4: Simplify right side
    397.68x = 187,864.38
  5. Step 5: Solve for x
    x = 187,864.38/397.68
  6. Step 6: Final answer
    x = 472.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.