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Finding the Fourth Proportional to 1,369.31, 2,053.49 and 547.37

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Solution

The fourth proportional to 1,369.31, 2,053.49 and 547.37 is: 820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.31 : 2,053.49 = 547.37 : x
  2. Step 2: Convert to fraction form
    1,369.31/2,053.49 = 547.37/x
  3. Step 3: Cross multiply
    1,369.31x = 2,053.49 × 547.37
  4. Step 4: Simplify right side
    1,369.31x = 1,124,005.82
  5. Step 5: Solve for x
    x = 1,124,005.82/1,369.31
  6. Step 6: Final answer
    x = 820.85

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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.