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Finding the Fourth Proportional to 397.15, 595.05 and 214.36

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Solution

The fourth proportional to 397.15, 595.05 and 214.36 is: 321.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.15 : 595.05 = 214.36 : x
  2. Step 2: Convert to fraction form
    397.15/595.05 = 214.36/x
  3. Step 3: Cross multiply
    397.15x = 595.05 × 214.36
  4. Step 4: Simplify right side
    397.15x = 127,554.92
  5. Step 5: Solve for x
    x = 127,554.92/397.15
  6. Step 6: Final answer
    x = 321.18

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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.