Home / 1,518.32-2,277.44-422.76

Finding the Fourth Proportional to 1,518.32, 2,277.44 and 422.76

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Solution

The fourth proportional to 1,518.32, 2,277.44 and 422.76 is: 634.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.32 : 2,277.44 = 422.76 : x
  2. Step 2: Convert to fraction form
    1,518.32/2,277.44 = 422.76/x
  3. Step 3: Cross multiply
    1,518.32x = 2,277.44 × 422.76
  4. Step 4: Simplify right side
    1,518.32x = 962,810.53
  5. Step 5: Solve for x
    x = 962,810.53/1,518.32
  6. Step 6: Final answer
    x = 634.13

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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.