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Finding the Fourth Proportional to 397.48, 595.68 and 253.12

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Solution

The fourth proportional to 397.48, 595.68 and 253.12 is: 379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.48 : 595.68 = 253.12 : x
  2. Step 2: Convert to fraction form
    397.48/595.68 = 253.12/x
  3. Step 3: Cross multiply
    397.48x = 595.68 × 253.12
  4. Step 4: Simplify right side
    397.48x = 150,778.52
  5. Step 5: Solve for x
    x = 150,778.52/397.48
  6. Step 6: Final answer
    x = 379.34

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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.