Home / 1,116.24-1,674.51-385.77

Finding the Fourth Proportional to 1,116.24, 1,674.51 and 385.77

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Solution

The fourth proportional to 1,116.24, 1,674.51 and 385.77 is: 578.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.24 : 1,674.51 = 385.77 : x
  2. Step 2: Convert to fraction form
    1,116.24/1,674.51 = 385.77/x
  3. Step 3: Cross multiply
    1,116.24x = 1,674.51 × 385.77
  4. Step 4: Simplify right side
    1,116.24x = 645,975.72
  5. Step 5: Solve for x
    x = 645,975.72/1,116.24
  6. Step 6: Final answer
    x = 578.71

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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.