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Finding the Fourth Proportional to 604.94, 906.79 and 258.50

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Solution

The fourth proportional to 604.94, 906.79 and 258.50 is: 387.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.94 : 906.79 = 258.50 : x
  2. Step 2: Convert to fraction form
    604.94/906.79 = 258.50/x
  3. Step 3: Cross multiply
    604.94x = 906.79 × 258.50
  4. Step 4: Simplify right side
    604.94x = 234,405.22
  5. Step 5: Solve for x
    x = 234,405.22/604.94
  6. Step 6: Final answer
    x = 387.49

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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.