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Finding the Fourth Proportional to 668.02, 921.86 and 373.29

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Solution

The fourth proportional to 668.02, 921.86 and 373.29 is: 515.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.02 : 921.86 = 373.29 : x
  2. Step 2: Convert to fraction form
    668.02/921.86 = 373.29/x
  3. Step 3: Cross multiply
    668.02x = 921.86 × 373.29
  4. Step 4: Simplify right side
    668.02x = 344,121.12
  5. Step 5: Solve for x
    x = 344,121.12/668.02
  6. Step 6: Final answer
    x = 515.14

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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.