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Finding the Fourth Proportional to 529.18, 793.62 and 163.90

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Solution

The fourth proportional to 529.18, 793.62 and 163.90 is: 245.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.18 : 793.62 = 163.90 : x
  2. Step 2: Convert to fraction form
    529.18/793.62 = 163.90/x
  3. Step 3: Cross multiply
    529.18x = 793.62 × 163.90
  4. Step 4: Simplify right side
    529.18x = 130,074.32
  5. Step 5: Solve for x
    x = 130,074.32/529.18
  6. Step 6: Final answer
    x = 245.80

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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.