Home / 1,343.12-2,015.52-477.44

Finding the Fourth Proportional to 1,343.12, 2,015.52 and 477.44

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Solution

The fourth proportional to 1,343.12, 2,015.52 and 477.44 is: 716.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.12 : 2,015.52 = 477.44 : x
  2. Step 2: Convert to fraction form
    1,343.12/2,015.52 = 477.44/x
  3. Step 3: Cross multiply
    1,343.12x = 2,015.52 × 477.44
  4. Step 4: Simplify right side
    1,343.12x = 962,289.87
  5. Step 5: Solve for x
    x = 962,289.87/1,343.12
  6. Step 6: Final answer
    x = 716.46

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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.