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Finding the Fourth Proportional to 1,343.43, 2,015.82 and 477.81

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Solution

The fourth proportional to 1,343.43, 2,015.82 and 477.81 is: 716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.43 : 2,015.82 = 477.81 : x
  2. Step 2: Convert to fraction form
    1,343.43/2,015.82 = 477.81/x
  3. Step 3: Cross multiply
    1,343.43x = 2,015.82 × 477.81
  4. Step 4: Simplify right side
    1,343.43x = 963,178.95
  5. Step 5: Solve for x
    x = 963,178.95/1,343.43
  6. Step 6: Final answer
    x = 716.96

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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.