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Finding the Fourth Proportional to 525.60, 788.43 and 217.44

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Solution

The fourth proportional to 525.60, 788.43 and 217.44 is: 326.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.60 : 788.43 = 217.44 : x
  2. Step 2: Convert to fraction form
    525.60/788.43 = 217.44/x
  3. Step 3: Cross multiply
    525.60x = 788.43 × 217.44
  4. Step 4: Simplify right side
    525.60x = 171,436.22
  5. Step 5: Solve for x
    x = 171,436.22/525.60
  6. Step 6: Final answer
    x = 326.17

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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.