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Finding the Fourth Proportional to 524, 785.96 and 158.78

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Solution

The fourth proportional to 524, 785.96 and 158.78 is: 238.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    524 : 785.96 = 158.78 : x
  2. Step 2: Convert to fraction form
    524/785.96 = 158.78/x
  3. Step 3: Cross multiply
    524x = 785.96 × 158.78
  4. Step 4: Simplify right side
    524x = 124,794.73
  5. Step 5: Solve for x
    x = 124,794.73/524
  6. Step 6: Final answer
    x = 238.16

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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.