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Finding the Fourth Proportional to 351.60, 522.78 and 351.60

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Solution

The fourth proportional to 351.60, 522.78 and 351.60 is: 522.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.60 : 522.78 = 351.60 : x
  2. Step 2: Convert to fraction form
    351.60/522.78 = 351.60/x
  3. Step 3: Cross multiply
    351.60x = 522.78 × 351.60
  4. Step 4: Simplify right side
    351.60x = 183,809.45
  5. Step 5: Solve for x
    x = 183,809.45/351.60
  6. Step 6: Final answer
    x = 522.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.