Home / 1,085.66-1,629.29-508.94

Finding the Fourth Proportional to 1,085.66, 1,629.29 and 508.94

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Solution

The fourth proportional to 1,085.66, 1,629.29 and 508.94 is: 763.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085.66 : 1,629.29 = 508.94 : x
  2. Step 2: Convert to fraction form
    1,085.66/1,629.29 = 508.94/x
  3. Step 3: Cross multiply
    1,085.66x = 1,629.29 × 508.94
  4. Step 4: Simplify right side
    1,085.66x = 829,203.98
  5. Step 5: Solve for x
    x = 829,203.98/1,085.66
  6. Step 6: Final answer
    x = 763.78

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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.