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Finding the Fourth Proportional to 1,333.66, 1,840.43 and 744.19

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Solution

The fourth proportional to 1,333.66, 1,840.43 and 744.19 is: 1,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333.66 : 1,840.43 = 744.19 : x
  2. Step 2: Convert to fraction form
    1,333.66/1,840.43 = 744.19/x
  3. Step 3: Cross multiply
    1,333.66x = 1,840.43 × 744.19
  4. Step 4: Simplify right side
    1,333.66x = 1,369,625.88
  5. Step 5: Solve for x
    x = 1,369,625.88/1,333.66
  6. Step 6: Final answer
    x = 1,026.97

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Double scale
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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.