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Finding the Fourth Proportional to 521.58, 782.55 and 197.04

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Solution

The fourth proportional to 521.58, 782.55 and 197.04 is: 295.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.58 : 782.55 = 197.04 : x
  2. Step 2: Convert to fraction form
    521.58/782.55 = 197.04/x
  3. Step 3: Cross multiply
    521.58x = 782.55 × 197.04
  4. Step 4: Simplify right side
    521.58x = 154,193.65
  5. Step 5: Solve for x
    x = 154,193.65/521.58
  6. Step 6: Final answer
    x = 295.63

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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.