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Finding the Fourth Proportional to 522.97, 784.56 and 157.79

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Solution

The fourth proportional to 522.97, 784.56 and 157.79 is: 236.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.97 : 784.56 = 157.79 : x
  2. Step 2: Convert to fraction form
    522.97/784.56 = 157.79/x
  3. Step 3: Cross multiply
    522.97x = 784.56 × 157.79
  4. Step 4: Simplify right side
    522.97x = 123,795.72
  5. Step 5: Solve for x
    x = 123,795.72/522.97
  6. Step 6: Final answer
    x = 236.72

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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.