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Finding the Fourth Proportional to 668.95, 1,003.62 and 236.14

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Solution

The fourth proportional to 668.95, 1,003.62 and 236.14 is: 354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.95 : 1,003.62 = 236.14 : x
  2. Step 2: Convert to fraction form
    668.95/1,003.62 = 236.14/x
  3. Step 3: Cross multiply
    668.95x = 1,003.62 × 236.14
  4. Step 4: Simplify right side
    668.95x = 236,994.83
  5. Step 5: Solve for x
    x = 236,994.83/668.95
  6. Step 6: Final answer
    x = 354.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.