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Finding the Fourth Proportional to 668.94, 1,003.77 and 344.94

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Solution

The fourth proportional to 668.94, 1,003.77 and 344.94 is: 517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.94 : 1,003.77 = 344.94 : x
  2. Step 2: Convert to fraction form
    668.94/1,003.77 = 344.94/x
  3. Step 3: Cross multiply
    668.94x = 1,003.77 × 344.94
  4. Step 4: Simplify right side
    668.94x = 346,240.42
  5. Step 5: Solve for x
    x = 346,240.42/668.94
  6. Step 6: Final answer
    x = 517.60

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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.