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Finding the Fourth Proportional to 1,763.42, 2,645.40 and 577.09

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Solution

The fourth proportional to 1,763.42, 2,645.40 and 577.09 is: 865.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.42 : 2,645.40 = 577.09 : x
  2. Step 2: Convert to fraction form
    1,763.42/2,645.40 = 577.09/x
  3. Step 3: Cross multiply
    1,763.42x = 2,645.40 × 577.09
  4. Step 4: Simplify right side
    1,763.42x = 1,526,639.36
  5. Step 5: Solve for x
    x = 1,526,639.36/1,763.42
  6. Step 6: Final answer
    x = 865.73

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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.