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Finding the Fourth Proportional to 997.20, 1,495.44 and 348.48

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Solution

The fourth proportional to 997.20, 1,495.44 and 348.48 is: 522.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.20 : 1,495.44 = 348.48 : x
  2. Step 2: Convert to fraction form
    997.20/1,495.44 = 348.48/x
  3. Step 3: Cross multiply
    997.20x = 1,495.44 × 348.48
  4. Step 4: Simplify right side
    997.20x = 521,130.93
  5. Step 5: Solve for x
    x = 521,130.93/997.20
  6. Step 6: Final answer
    x = 522.59

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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.