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Finding the Fourth Proportional to 1,741.09, 2,610.95 and 766.50

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Solution

The fourth proportional to 1,741.09, 2,610.95 and 766.50 is: 1,149.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,741.09 : 2,610.95 = 766.50 : x
  2. Step 2: Convert to fraction form
    1,741.09/2,610.95 = 766.50/x
  3. Step 3: Cross multiply
    1,741.09x = 2,610.95 × 766.50
  4. Step 4: Simplify right side
    1,741.09x = 2,001,289.34
  5. Step 5: Solve for x
    x = 2,001,289.34/1,741.09
  6. Step 6: Final answer
    x = 1,149.45

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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.