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Finding the Fourth Proportional to 1,336.88, 1,844.91 and 747.47

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Solution

The fourth proportional to 1,336.88, 1,844.91 and 747.47 is: 1,031.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.88 : 1,844.91 = 747.47 : x
  2. Step 2: Convert to fraction form
    1,336.88/1,844.91 = 747.47/x
  3. Step 3: Cross multiply
    1,336.88x = 1,844.91 × 747.47
  4. Step 4: Simplify right side
    1,336.88x = 1,379,005.65
  5. Step 5: Solve for x
    x = 1,379,005.65/1,336.88
  6. Step 6: Final answer
    x = 1,031.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.