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Finding the Fourth Proportional to 2,894.90, 4,342.28 and 703.64

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Solution

The fourth proportional to 2,894.90, 4,342.28 and 703.64 is: 1,055.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,894.90 : 4,342.28 = 703.64 : x
  2. Step 2: Convert to fraction form
    2,894.90/4,342.28 = 703.64/x
  3. Step 3: Cross multiply
    2,894.90x = 4,342.28 × 703.64
  4. Step 4: Simplify right side
    2,894.90x = 3,055,380.19
  5. Step 5: Solve for x
    x = 3,055,380.19/2,894.90
  6. Step 6: Final answer
    x = 1,055.44

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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.