Home / 1,184.21-1,776.36-318.51

Finding the Fourth Proportional to 1,184.21, 1,776.36 and 318.51

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Solution

The fourth proportional to 1,184.21, 1,776.36 and 318.51 is: 477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.21 : 1,776.36 = 318.51 : x
  2. Step 2: Convert to fraction form
    1,184.21/1,776.36 = 318.51/x
  3. Step 3: Cross multiply
    1,184.21x = 1,776.36 × 318.51
  4. Step 4: Simplify right side
    1,184.21x = 565,788.42
  5. Step 5: Solve for x
    x = 565,788.42/1,184.21
  6. Step 6: Final answer
    x = 477.78

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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.