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Finding the Fourth Proportional to 397.26, 595.40 and 253.02

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Solution

The fourth proportional to 397.26, 595.40 and 253.02 is: 379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.26 : 595.40 = 253.02 : x
  2. Step 2: Convert to fraction form
    397.26/595.40 = 253.02/x
  3. Step 3: Cross multiply
    397.26x = 595.40 × 253.02
  4. Step 4: Simplify right side
    397.26x = 150,648.11
  5. Step 5: Solve for x
    x = 150,648.11/397.26
  6. Step 6: Final answer
    x = 379.22

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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.