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Finding the Fourth Proportional to 1,578.30, 2,367.44 and 482.66

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Solution

The fourth proportional to 1,578.30, 2,367.44 and 482.66 is: 723.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.30 : 2,367.44 = 482.66 : x
  2. Step 2: Convert to fraction form
    1,578.30/2,367.44 = 482.66/x
  3. Step 3: Cross multiply
    1,578.30x = 2,367.44 × 482.66
  4. Step 4: Simplify right side
    1,578.30x = 1,142,668.59
  5. Step 5: Solve for x
    x = 1,142,668.59/1,578.30
  6. Step 6: Final answer
    x = 723.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.