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Finding the Fourth Proportional to 1,336.93, 1,844.19 and 805.45

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Solution

The fourth proportional to 1,336.93, 1,844.19 and 805.45 is: 1,111.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.93 : 1,844.19 = 805.45 : x
  2. Step 2: Convert to fraction form
    1,336.93/1,844.19 = 805.45/x
  3. Step 3: Cross multiply
    1,336.93x = 1,844.19 × 805.45
  4. Step 4: Simplify right side
    1,336.93x = 1,485,402.84
  5. Step 5: Solve for x
    x = 1,485,402.84/1,336.93
  6. Step 6: Final answer
    x = 1,111.06

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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.