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Finding the Fourth Proportional to 397.49, 595.62 and 345.87

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Solution

The fourth proportional to 397.49, 595.62 and 345.87 is: 518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.49 : 595.62 = 345.87 : x
  2. Step 2: Convert to fraction form
    397.49/595.62 = 345.87/x
  3. Step 3: Cross multiply
    397.49x = 595.62 × 345.87
  4. Step 4: Simplify right side
    397.49x = 206,007.09
  5. Step 5: Solve for x
    x = 206,007.09/397.49
  6. Step 6: Final answer
    x = 518.28

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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.