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Finding the Fourth Proportional to 264.34, 395.61 and 220.60

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Solution

The fourth proportional to 264.34, 395.61 and 220.60 is: 330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.34 : 395.61 = 220.60 : x
  2. Step 2: Convert to fraction form
    264.34/395.61 = 220.60/x
  3. Step 3: Cross multiply
    264.34x = 395.61 × 220.60
  4. Step 4: Simplify right side
    264.34x = 87,271.57
  5. Step 5: Solve for x
    x = 87,271.57/264.34
  6. Step 6: Final answer
    x = 330.15

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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.