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Finding the Fourth Proportional to 1,336.66, 1,844.58 and 747.25

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Solution

The fourth proportional to 1,336.66, 1,844.58 and 747.25 is: 1,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.66 : 1,844.58 = 747.25 : x
  2. Step 2: Convert to fraction form
    1,336.66/1,844.58 = 747.25/x
  3. Step 3: Cross multiply
    1,336.66x = 1,844.58 × 747.25
  4. Step 4: Simplify right side
    1,336.66x = 1,378,362.41
  5. Step 5: Solve for x
    x = 1,378,362.41/1,336.66
  6. Step 6: Final answer
    x = 1,031.20

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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.