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Finding the Fourth Proportional to 1,683.74, 2,525.73 and 513.84

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Solution

The fourth proportional to 1,683.74, 2,525.73 and 513.84 is: 770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.74 : 2,525.73 = 513.84 : x
  2. Step 2: Convert to fraction form
    1,683.74/2,525.73 = 513.84/x
  3. Step 3: Cross multiply
    1,683.74x = 2,525.73 × 513.84
  4. Step 4: Simplify right side
    1,683.74x = 1,297,821.10
  5. Step 5: Solve for x
    x = 1,297,821.10/1,683.74
  6. Step 6: Final answer
    x = 770.80

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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.