Home / 1,243.20-1,865.16-377.76

Finding the Fourth Proportional to 1,243.20, 1,865.16 and 377.76

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Solution

The fourth proportional to 1,243.20, 1,865.16 and 377.76 is: 566.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.20 : 1,865.16 = 377.76 : x
  2. Step 2: Convert to fraction form
    1,243.20/1,865.16 = 377.76/x
  3. Step 3: Cross multiply
    1,243.20x = 1,865.16 × 377.76
  4. Step 4: Simplify right side
    1,243.20x = 704,582.84
  5. Step 5: Solve for x
    x = 704,582.84/1,243.20
  6. Step 6: Final answer
    x = 566.75

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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.