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Finding the Fourth Proportional to 1,067.10, 1,592.94 and 986.94

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Solution

The fourth proportional to 1,067.10, 1,592.94 and 986.94 is: 1,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.10 : 1,592.94 = 986.94 : x
  2. Step 2: Convert to fraction form
    1,067.10/1,592.94 = 986.94/x
  3. Step 3: Cross multiply
    1,067.10x = 1,592.94 × 986.94
  4. Step 4: Simplify right side
    1,067.10x = 1,572,136.20
  5. Step 5: Solve for x
    x = 1,572,136.20/1,067.10
  6. Step 6: Final answer
    x = 1,473.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.