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Finding the Fourth Proportional to 397.11, 595.67 and 153.60

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Solution

The fourth proportional to 397.11, 595.67 and 153.60 is: 230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.11 : 595.67 = 153.60 : x
  2. Step 2: Convert to fraction form
    397.11/595.67 = 153.60/x
  3. Step 3: Cross multiply
    397.11x = 595.67 × 153.60
  4. Step 4: Simplify right side
    397.11x = 91,494.91
  5. Step 5: Solve for x
    x = 91,494.91/397.11
  6. Step 6: Final answer
    x = 230.40

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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.