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Finding the Fourth Proportional to 1,336.44, 1,844.15 and 917.15

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Solution

The fourth proportional to 1,336.44, 1,844.15 and 917.15 is: 1,265.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.44 : 1,844.15 = 917.15 : x
  2. Step 2: Convert to fraction form
    1,336.44/1,844.15 = 917.15/x
  3. Step 3: Cross multiply
    1,336.44x = 1,844.15 × 917.15
  4. Step 4: Simplify right side
    1,336.44x = 1,691,369.08
  5. Step 5: Solve for x
    x = 1,691,369.08/1,336.44
  6. Step 6: Final answer
    x = 1,265.58

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1.5x scale

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.