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Finding the Fourth Proportional to 348.41, 522.20 and 155.63

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Solution

The fourth proportional to 348.41, 522.20 and 155.63 is: 233.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.41 : 522.20 = 155.63 : x
  2. Step 2: Convert to fraction form
    348.41/522.20 = 155.63/x
  3. Step 3: Cross multiply
    348.41x = 522.20 × 155.63
  4. Step 4: Simplify right side
    348.41x = 81,267.76
  5. Step 5: Solve for x
    x = 81,267.76/348.41
  6. Step 6: Final answer
    x = 233.26

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Double scale
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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.