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Finding the Fourth Proportional to 1,479.25, 2,041.37 and 858.37

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Solution

The fourth proportional to 1,479.25, 2,041.37 and 858.37 is: 1,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.25 : 2,041.37 = 858.37 : x
  2. Step 2: Convert to fraction form
    1,479.25/2,041.37 = 858.37/x
  3. Step 3: Cross multiply
    1,479.25x = 2,041.37 × 858.37
  4. Step 4: Simplify right side
    1,479.25x = 1,752,246.48
  5. Step 5: Solve for x
    x = 1,752,246.48/1,479.25
  6. Step 6: Final answer
    x = 1,184.55

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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.