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Finding the Fourth Proportional to 1,342.82, 2,014.28 and 369

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Solution

The fourth proportional to 1,342.82, 2,014.28 and 369 is: 553.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.82 : 2,014.28 = 369 : x
  2. Step 2: Convert to fraction form
    1,342.82/2,014.28 = 369/x
  3. Step 3: Cross multiply
    1,342.82x = 2,014.28 × 369
  4. Step 4: Simplify right side
    1,342.82x = 743,270.24
  5. Step 5: Solve for x
    x = 743,270.24/1,342.82
  6. Step 6: Final answer
    x = 553.51

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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.