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Finding the Fourth Proportional to 602.76, 904.31 and 191.89

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Solution

The fourth proportional to 602.76, 904.31 and 191.89 is: 287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.76 : 904.31 = 191.89 : x
  2. Step 2: Convert to fraction form
    602.76/904.31 = 191.89/x
  3. Step 3: Cross multiply
    602.76x = 904.31 × 191.89
  4. Step 4: Simplify right side
    602.76x = 173,528.05
  5. Step 5: Solve for x
    x = 173,528.05/602.76
  6. Step 6: Final answer
    x = 287.89

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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.