Home / 1,085.85-1,629.46-624.53

Finding the Fourth Proportional to 1,085.85, 1,629.46 and 624.53

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Solution

The fourth proportional to 1,085.85, 1,629.46 and 624.53 is: 937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085.85 : 1,629.46 = 624.53 : x
  2. Step 2: Convert to fraction form
    1,085.85/1,629.46 = 624.53/x
  3. Step 3: Cross multiply
    1,085.85x = 1,629.46 × 624.53
  4. Step 4: Simplify right side
    1,085.85x = 1,017,651.51
  5. Step 5: Solve for x
    x = 1,017,651.51/1,085.85
  6. Step 6: Final answer
    x = 937.19

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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.