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Finding the Fourth Proportional to 1,365.96, 2,043.75 and 829.68

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Solution

The fourth proportional to 1,365.96, 2,043.75 and 829.68 is: 1,241.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.96 : 2,043.75 = 829.68 : x
  2. Step 2: Convert to fraction form
    1,365.96/2,043.75 = 829.68/x
  3. Step 3: Cross multiply
    1,365.96x = 2,043.75 × 829.68
  4. Step 4: Simplify right side
    1,365.96x = 1,695,658.50
  5. Step 5: Solve for x
    x = 1,695,658.50/1,365.96
  6. Step 6: Final answer
    x = 1,241.37

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1.5x scale

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.