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Finding the Fourth Proportional to 1,360.26, 1,877.31 and 829.17

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Solution

The fourth proportional to 1,360.26, 1,877.31 and 829.17 is: 1,144.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.26 : 1,877.31 = 829.17 : x
  2. Step 2: Convert to fraction form
    1,360.26/1,877.31 = 829.17/x
  3. Step 3: Cross multiply
    1,360.26x = 1,877.31 × 829.17
  4. Step 4: Simplify right side
    1,360.26x = 1,556,609.13
  5. Step 5: Solve for x
    x = 1,556,609.13/1,360.26
  6. Step 6: Final answer
    x = 1,144.35

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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.