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Finding the Fourth Proportional to 1,368.14, 1,887.56 and 829.95

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Solution

The fourth proportional to 1,368.14, 1,887.56 and 829.95 is: 1,145.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.14 : 1,887.56 = 829.95 : x
  2. Step 2: Convert to fraction form
    1,368.14/1,887.56 = 829.95/x
  3. Step 3: Cross multiply
    1,368.14x = 1,887.56 × 829.95
  4. Step 4: Simplify right side
    1,368.14x = 1,566,566.83
  5. Step 5: Solve for x
    x = 1,566,566.83/1,368.14
  6. Step 6: Final answer
    x = 1,145.04

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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.