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Finding the Fourth Proportional to 1,763.90, 2,645.00 and 531.08

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Solution

The fourth proportional to 1,763.90, 2,645.00 and 531.08 is: 796.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.90 : 2,645.00 = 531.08 : x
  2. Step 2: Convert to fraction form
    1,763.90/2,645.00 = 531.08/x
  3. Step 3: Cross multiply
    1,763.90x = 2,645.00 × 531.08
  4. Step 4: Simplify right side
    1,763.90x = 1,404,703.94
  5. Step 5: Solve for x
    x = 1,404,703.94/1,763.90
  6. Step 6: Final answer
    x = 796.36

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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.