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Finding the Fourth Proportional to 1,578.24, 2,367.40 and 552.24

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Solution

The fourth proportional to 1,578.24, 2,367.40 and 552.24 is: 828.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.24 : 2,367.40 = 552.24 : x
  2. Step 2: Convert to fraction form
    1,578.24/2,367.40 = 552.24/x
  3. Step 3: Cross multiply
    1,578.24x = 2,367.40 × 552.24
  4. Step 4: Simplify right side
    1,578.24x = 1,307,372.98
  5. Step 5: Solve for x
    x = 1,307,372.98/1,578.24
  6. Step 6: Final answer
    x = 828.37

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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.