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Finding the Fourth Proportional to 1,578.63, 2,367.93 and 538.62

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Solution

The fourth proportional to 1,578.63, 2,367.93 and 538.62 is: 807.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.63 : 2,367.93 = 538.62 : x
  2. Step 2: Convert to fraction form
    1,578.63/2,367.93 = 538.62/x
  3. Step 3: Cross multiply
    1,578.63x = 2,367.93 × 538.62
  4. Step 4: Simplify right side
    1,578.63x = 1,275,414.46
  5. Step 5: Solve for x
    x = 1,275,414.46/1,578.63
  6. Step 6: Final answer
    x = 807.92

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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.