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Finding the Fourth Proportional to 402.93, 604.40 and 197.64

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Solution

The fourth proportional to 402.93, 604.40 and 197.64 is: 296.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.93 : 604.40 = 197.64 : x
  2. Step 2: Convert to fraction form
    402.93/604.40 = 197.64/x
  3. Step 3: Cross multiply
    402.93x = 604.40 × 197.64
  4. Step 4: Simplify right side
    402.93x = 119,452.63
  5. Step 5: Solve for x
    x = 119,452.63/402.93
  6. Step 6: Final answer
    x = 296.46

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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.