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Finding the Fourth Proportional to 668.23, 922.15 and 373.49

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Solution

The fourth proportional to 668.23, 922.15 and 373.49 is: 515.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.23 : 922.15 = 373.49 : x
  2. Step 2: Convert to fraction form
    668.23/922.15 = 373.49/x
  3. Step 3: Cross multiply
    668.23x = 922.15 × 373.49
  4. Step 4: Simplify right side
    668.23x = 344,415.18
  5. Step 5: Solve for x
    x = 344,415.18/668.23
  6. Step 6: Final answer
    x = 515.42

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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.