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Finding the Fourth Proportional to 397.19, 595.68 and 242.57

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Solution

The fourth proportional to 397.19, 595.68 and 242.57 is: 363.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.19 : 595.68 = 242.57 : x
  2. Step 2: Convert to fraction form
    397.19/595.68 = 242.57/x
  3. Step 3: Cross multiply
    397.19x = 595.68 × 242.57
  4. Step 4: Simplify right side
    397.19x = 144,491.12
  5. Step 5: Solve for x
    x = 144,491.12/397.19
  6. Step 6: Final answer
    x = 363.79

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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.