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Finding the Fourth Proportional to 1,683.12, 2,525.08 and 528.87

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Solution

The fourth proportional to 1,683.12, 2,525.08 and 528.87 is: 793.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.12 : 2,525.08 = 528.87 : x
  2. Step 2: Convert to fraction form
    1,683.12/2,525.08 = 528.87/x
  3. Step 3: Cross multiply
    1,683.12x = 2,525.08 × 528.87
  4. Step 4: Simplify right side
    1,683.12x = 1,335,439.72
  5. Step 5: Solve for x
    x = 1,335,439.72/1,683.12
  6. Step 6: Final answer
    x = 793.43

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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.