Home / 1,343.25-2,015.28-477.77

Finding the Fourth Proportional to 1,343.25, 2,015.28 and 477.77

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Solution

The fourth proportional to 1,343.25, 2,015.28 and 477.77 is: 716.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.25 : 2,015.28 = 477.77 : x
  2. Step 2: Convert to fraction form
    1,343.25/2,015.28 = 477.77/x
  3. Step 3: Cross multiply
    1,343.25x = 2,015.28 × 477.77
  4. Step 4: Simplify right side
    1,343.25x = 962,830.25
  5. Step 5: Solve for x
    x = 962,830.25/1,343.25
  6. Step 6: Final answer
    x = 716.79

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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.