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Finding the Fourth Proportional to 1,333.81, 2,005.02 and 1,236.76

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Solution

The fourth proportional to 1,333.81, 2,005.02 and 1,236.76 is: 1,859.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333.81 : 2,005.02 = 1,236.76 : x
  2. Step 2: Convert to fraction form
    1,333.81/2,005.02 = 1,236.76/x
  3. Step 3: Cross multiply
    1,333.81x = 2,005.02 × 1,236.76
  4. Step 4: Simplify right side
    1,333.81x = 2,479,728.54
  5. Step 5: Solve for x
    x = 2,479,728.54/1,333.81
  6. Step 6: Final answer
    x = 1,859.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.