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Finding the Fourth Proportional to 1,364.57, 1,883.09 and 743.57

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Solution

The fourth proportional to 1,364.57, 1,883.09 and 743.57 is: 1,026.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.57 : 1,883.09 = 743.57 : x
  2. Step 2: Convert to fraction form
    1,364.57/1,883.09 = 743.57/x
  3. Step 3: Cross multiply
    1,364.57x = 1,883.09 × 743.57
  4. Step 4: Simplify right side
    1,364.57x = 1,400,209.23
  5. Step 5: Solve for x
    x = 1,400,209.23/1,364.57
  6. Step 6: Final answer
    x = 1,026.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.