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Finding the Fourth Proportional to 307.29, 460.38 and 220.50

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Solution

The fourth proportional to 307.29, 460.38 and 220.50 is: 330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.29 : 460.38 = 220.50 : x
  2. Step 2: Convert to fraction form
    307.29/460.38 = 220.50/x
  3. Step 3: Cross multiply
    307.29x = 460.38 × 220.50
  4. Step 4: Simplify right side
    307.29x = 101,513.79
  5. Step 5: Solve for x
    x = 101,513.79/307.29
  6. Step 6: Final answer
    x = 330.35

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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.