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Finding the Fourth Proportional to 668.20, 922.12 and 373.46

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Solution

The fourth proportional to 668.20, 922.12 and 373.46 is: 515.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.20 : 922.12 = 373.46 : x
  2. Step 2: Convert to fraction form
    668.20/922.12 = 373.46/x
  3. Step 3: Cross multiply
    668.20x = 922.12 × 373.46
  4. Step 4: Simplify right side
    668.20x = 344,374.94
  5. Step 5: Solve for x
    x = 344,374.94/668.20
  6. Step 6: Final answer
    x = 515.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.