Home / 1,113.44-1,669.59-372.78

Finding the Fourth Proportional to 1,113.44, 1,669.59 and 372.78

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Solution

The fourth proportional to 1,113.44, 1,669.59 and 372.78 is: 558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.44 : 1,669.59 = 372.78 : x
  2. Step 2: Convert to fraction form
    1,113.44/1,669.59 = 372.78/x
  3. Step 3: Cross multiply
    1,113.44x = 1,669.59 × 372.78
  4. Step 4: Simplify right side
    1,113.44x = 622,389.76
  5. Step 5: Solve for x
    x = 622,389.76/1,113.44
  6. Step 6: Final answer
    x = 558.98

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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.