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Finding the Fourth Proportional to 522.42, 783.96 and 197.76

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Solution

The fourth proportional to 522.42, 783.96 and 197.76 is: 296.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.42 : 783.96 = 197.76 : x
  2. Step 2: Convert to fraction form
    522.42/783.96 = 197.76/x
  3. Step 3: Cross multiply
    522.42x = 783.96 × 197.76
  4. Step 4: Simplify right side
    522.42x = 155,035.93
  5. Step 5: Solve for x
    x = 155,035.93/522.42
  6. Step 6: Final answer
    x = 296.76

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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.