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Finding the Fourth Proportional to 1,133.77, 1,699.95 and 743.29

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Solution

The fourth proportional to 1,133.77, 1,699.95 and 743.29 is: 1,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.77 : 1,699.95 = 743.29 : x
  2. Step 2: Convert to fraction form
    1,133.77/1,699.95 = 743.29/x
  3. Step 3: Cross multiply
    1,133.77x = 1,699.95 × 743.29
  4. Step 4: Simplify right side
    1,133.77x = 1,263,555.84
  5. Step 5: Solve for x
    x = 1,263,555.84/1,133.77
  6. Step 6: Final answer
    x = 1,114.47

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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.