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Finding the Fourth Proportional to 602.78, 904.18 and 191.96

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Solution

The fourth proportional to 602.78, 904.18 and 191.96 is: 287.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.78 : 904.18 = 191.96 : x
  2. Step 2: Convert to fraction form
    602.78/904.18 = 191.96/x
  3. Step 3: Cross multiply
    602.78x = 904.18 × 191.96
  4. Step 4: Simplify right side
    602.78x = 173,566.39
  5. Step 5: Solve for x
    x = 173,566.39/602.78
  6. Step 6: Final answer
    x = 287.94

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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.