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Finding the Fourth Proportional to 348.16, 522.60 and 220

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Solution

The fourth proportional to 348.16, 522.60 and 220 is: 330.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.16 : 522.60 = 220 : x
  2. Step 2: Convert to fraction form
    348.16/522.60 = 220/x
  3. Step 3: Cross multiply
    348.16x = 522.60 × 220
  4. Step 4: Simplify right side
    348.16x = 114,972
  5. Step 5: Solve for x
    x = 114,972/348.16
  6. Step 6: Final answer
    x = 330.23

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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.