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Finding the Fourth Proportional to 1,068.94, 1,474.89 and 676.42

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Solution

The fourth proportional to 1,068.94, 1,474.89 and 676.42 is: 933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.94 : 1,474.89 = 676.42 : x
  2. Step 2: Convert to fraction form
    1,068.94/1,474.89 = 676.42/x
  3. Step 3: Cross multiply
    1,068.94x = 1,474.89 × 676.42
  4. Step 4: Simplify right side
    1,068.94x = 997,645.09
  5. Step 5: Solve for x
    x = 997,645.09/1,068.94
  6. Step 6: Final answer
    x = 933.30

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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.