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Finding the Fourth Proportional to 668.06, 922.03 and 406.03

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Solution

The fourth proportional to 668.06, 922.03 and 406.03 is: 560.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.06 : 922.03 = 406.03 : x
  2. Step 2: Convert to fraction form
    668.06/922.03 = 406.03/x
  3. Step 3: Cross multiply
    668.06x = 922.03 × 406.03
  4. Step 4: Simplify right side
    668.06x = 374,368.52
  5. Step 5: Solve for x
    x = 374,368.52/668.06
  6. Step 6: Final answer
    x = 560.38

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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.