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Finding the Fourth Proportional to 1,343.93, 1,999.64 and 1,310.45

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Solution

The fourth proportional to 1,343.93, 1,999.64 and 1,310.45 is: 1,949.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.93 : 1,999.64 = 1,310.45 : x
  2. Step 2: Convert to fraction form
    1,343.93/1,999.64 = 1,310.45/x
  3. Step 3: Cross multiply
    1,343.93x = 1,999.64 × 1,310.45
  4. Step 4: Simplify right side
    1,343.93x = 2,620,436.51
  5. Step 5: Solve for x
    x = 2,620,436.51/1,343.93
  6. Step 6: Final answer
    x = 1,949.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.