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Finding the Fourth Proportional to 610.15, 914.39 and 258.46

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Solution

The fourth proportional to 610.15, 914.39 and 258.46 is: 387.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.15 : 914.39 = 258.46 : x
  2. Step 2: Convert to fraction form
    610.15/914.39 = 258.46/x
  3. Step 3: Cross multiply
    610.15x = 914.39 × 258.46
  4. Step 4: Simplify right side
    610.15x = 236,329.66
  5. Step 5: Solve for x
    x = 236,329.66/610.15
  6. Step 6: Final answer
    x = 387.33

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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.