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Finding the Fourth Proportional to 1,097.10, 1,645.04 and 750.82

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Solution

The fourth proportional to 1,097.10, 1,645.04 and 750.82 is: 1,125.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.10 : 1,645.04 = 750.82 : x
  2. Step 2: Convert to fraction form
    1,097.10/1,645.04 = 750.82/x
  3. Step 3: Cross multiply
    1,097.10x = 1,645.04 × 750.82
  4. Step 4: Simplify right side
    1,097.10x = 1,235,128.93
  5. Step 5: Solve for x
    x = 1,235,128.93/1,097.10
  6. Step 6: Final answer
    x = 1,125.81

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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.