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Finding the Fourth Proportional to 1,777.31, 2,664.05 and 736.66

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Solution

The fourth proportional to 1,777.31, 2,664.05 and 736.66 is: 1,104.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.31 : 2,664.05 = 736.66 : x
  2. Step 2: Convert to fraction form
    1,777.31/2,664.05 = 736.66/x
  3. Step 3: Cross multiply
    1,777.31x = 2,664.05 × 736.66
  4. Step 4: Simplify right side
    1,777.31x = 1,962,482.07
  5. Step 5: Solve for x
    x = 1,962,482.07/1,777.31
  6. Step 6: Final answer
    x = 1,104.19

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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.