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Finding the Fourth Proportional to 397.28, 595.23 and 202.07

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Solution

The fourth proportional to 397.28, 595.23 and 202.07 is: 302.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.28 : 595.23 = 202.07 : x
  2. Step 2: Convert to fraction form
    397.28/595.23 = 202.07/x
  3. Step 3: Cross multiply
    397.28x = 595.23 × 202.07
  4. Step 4: Simplify right side
    397.28x = 120,278.13
  5. Step 5: Solve for x
    x = 120,278.13/397.28
  6. Step 6: Final answer
    x = 302.75

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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.