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Finding the Fourth Proportional to 397.07, 595.61 and 165.90

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Solution

The fourth proportional to 397.07, 595.61 and 165.90 is: 248.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.07 : 595.61 = 165.90 : x
  2. Step 2: Convert to fraction form
    397.07/595.61 = 165.90/x
  3. Step 3: Cross multiply
    397.07x = 595.61 × 165.90
  4. Step 4: Simplify right side
    397.07x = 98,812.11
  5. Step 5: Solve for x
    x = 98,812.11/397.07
  6. Step 6: Final answer
    x = 248.86

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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.