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Finding the Fourth Proportional to 1,336.06, 2,001.41 and 666.94

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Solution

The fourth proportional to 1,336.06, 2,001.41 and 666.94 is: 999.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.06 : 2,001.41 = 666.94 : x
  2. Step 2: Convert to fraction form
    1,336.06/2,001.41 = 666.94/x
  3. Step 3: Cross multiply
    1,336.06x = 2,001.41 × 666.94
  4. Step 4: Simplify right side
    1,336.06x = 1,334,820.39
  5. Step 5: Solve for x
    x = 1,334,820.39/1,336.06
  6. Step 6: Final answer
    x = 999.07

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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.