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Finding the Fourth Proportional to 1,079.69, 1,483.51 and 858.26

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Solution

The fourth proportional to 1,079.69, 1,483.51 and 858.26 is: 1,179.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.69 : 1,483.51 = 858.26 : x
  2. Step 2: Convert to fraction form
    1,079.69/1,483.51 = 858.26/x
  3. Step 3: Cross multiply
    1,079.69x = 1,483.51 × 858.26
  4. Step 4: Simplify right side
    1,079.69x = 1,273,232.02
  5. Step 5: Solve for x
    x = 1,273,232.02/1,079.69
  6. Step 6: Final answer
    x = 1,179.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.