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Finding the Fourth Proportional to 997.68, 1,496.62 and 348.42

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Solution

The fourth proportional to 997.68, 1,496.62 and 348.42 is: 522.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.68 : 1,496.62 = 348.42 : x
  2. Step 2: Convert to fraction form
    997.68/1,496.62 = 348.42/x
  3. Step 3: Cross multiply
    997.68x = 1,496.62 × 348.42
  4. Step 4: Simplify right side
    997.68x = 521,443.99
  5. Step 5: Solve for x
    x = 521,443.99/997.68
  6. Step 6: Final answer
    x = 522.66

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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.