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Finding the Fourth Proportional to 348.18, 520.64 and 236.67

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Solution

The fourth proportional to 348.18, 520.64 and 236.67 is: 353.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.18 : 520.64 = 236.67 : x
  2. Step 2: Convert to fraction form
    348.18/520.64 = 236.67/x
  3. Step 3: Cross multiply
    348.18x = 520.64 × 236.67
  4. Step 4: Simplify right side
    348.18x = 123,218.69
  5. Step 5: Solve for x
    x = 123,218.69/348.18
  6. Step 6: Final answer
    x = 353.89

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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.