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Finding the Fourth Proportional to 667.95, 921.77 and 373.23

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Solution

The fourth proportional to 667.95, 921.77 and 373.23 is: 515.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.95 : 921.77 = 373.23 : x
  2. Step 2: Convert to fraction form
    667.95/921.77 = 373.23/x
  3. Step 3: Cross multiply
    667.95x = 921.77 × 373.23
  4. Step 4: Simplify right side
    667.95x = 344,032.22
  5. Step 5: Solve for x
    x = 344,032.22/667.95
  6. Step 6: Final answer
    x = 515.06

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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.