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Finding the Fourth Proportional to 524.12, 786.10 and 158.80

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Solution

The fourth proportional to 524.12, 786.10 and 158.80 is: 238.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.12 : 786.10 = 158.80 : x
  2. Step 2: Convert to fraction form
    524.12/786.10 = 158.80/x
  3. Step 3: Cross multiply
    524.12x = 786.10 × 158.80
  4. Step 4: Simplify right side
    524.12x = 124,832.68
  5. Step 5: Solve for x
    x = 124,832.68/524.12
  6. Step 6: Final answer
    x = 238.18

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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.