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Finding the Fourth Proportional to 1,632.50, 2,447.12 and 765.26

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Solution

The fourth proportional to 1,632.50, 2,447.12 and 765.26 is: 1,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,632.50 : 2,447.12 = 765.26 : x
  2. Step 2: Convert to fraction form
    1,632.50/2,447.12 = 765.26/x
  3. Step 3: Cross multiply
    1,632.50x = 2,447.12 × 765.26
  4. Step 4: Simplify right side
    1,632.50x = 1,872,683.05
  5. Step 5: Solve for x
    x = 1,872,683.05/1,632.50
  6. Step 6: Final answer
    x = 1,147.13

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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.