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Finding the Fourth Proportional to 2,880.42, 4,320.72 and 800.44

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Solution

The fourth proportional to 2,880.42, 4,320.72 and 800.44 is: 1,200.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.42 : 4,320.72 = 800.44 : x
  2. Step 2: Convert to fraction form
    2,880.42/4,320.72 = 800.44/x
  3. Step 3: Cross multiply
    2,880.42x = 4,320.72 × 800.44
  4. Step 4: Simplify right side
    2,880.42x = 3,458,477.12
  5. Step 5: Solve for x
    x = 3,458,477.12/2,880.42
  6. Step 6: Final answer
    x = 1,200.69

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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.