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Finding the Fourth Proportional to 1,578.49, 2,369.20 and 799.05

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Solution

The fourth proportional to 1,578.49, 2,369.20 and 799.05 is: 1,199.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.49 : 2,369.20 = 799.05 : x
  2. Step 2: Convert to fraction form
    1,578.49/2,369.20 = 799.05/x
  3. Step 3: Cross multiply
    1,578.49x = 2,369.20 × 799.05
  4. Step 4: Simplify right side
    1,578.49x = 1,893,109.26
  5. Step 5: Solve for x
    x = 1,893,109.26/1,578.49
  6. Step 6: Final answer
    x = 1,199.32

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1.5x scale

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.