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Finding the Fourth Proportional to 307.64, 460.77 and 238.61

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Solution

The fourth proportional to 307.64, 460.77 and 238.61 is: 357.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.64 : 460.77 = 238.61 : x
  2. Step 2: Convert to fraction form
    307.64/460.77 = 238.61/x
  3. Step 3: Cross multiply
    307.64x = 460.77 × 238.61
  4. Step 4: Simplify right side
    307.64x = 109,945.48
  5. Step 5: Solve for x
    x = 109,945.48/307.64
  6. Step 6: Final answer
    x = 357.39

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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.