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Finding the Fourth Proportional to 668.04, 921.91 and 373.33

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Solution

The fourth proportional to 668.04, 921.91 and 373.33 is: 515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.04 : 921.91 = 373.33 : x
  2. Step 2: Convert to fraction form
    668.04/921.91 = 373.33/x
  3. Step 3: Cross multiply
    668.04x = 921.91 × 373.33
  4. Step 4: Simplify right side
    668.04x = 344,176.66
  5. Step 5: Solve for x
    x = 344,176.66/668.04
  6. Step 6: Final answer
    x = 515.20

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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.