Home / 1,243.90-1,865.40-377.92

Finding the Fourth Proportional to 1,243.90, 1,865.40 and 377.92

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Solution

The fourth proportional to 1,243.90, 1,865.40 and 377.92 is: 566.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.90 : 1,865.40 = 377.92 : x
  2. Step 2: Convert to fraction form
    1,243.90/1,865.40 = 377.92/x
  3. Step 3: Cross multiply
    1,243.90x = 1,865.40 × 377.92
  4. Step 4: Simplify right side
    1,243.90x = 704,971.97
  5. Step 5: Solve for x
    x = 704,971.97/1,243.90
  6. Step 6: Final answer
    x = 566.74

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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.