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Finding the Fourth Proportional to 523.63, 785.43 and 158.42

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Solution

The fourth proportional to 523.63, 785.43 and 158.42 is: 237.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.63 : 785.43 = 158.42 : x
  2. Step 2: Convert to fraction form
    523.63/785.43 = 158.42/x
  3. Step 3: Cross multiply
    523.63x = 785.43 × 158.42
  4. Step 4: Simplify right side
    523.63x = 124,429.78
  5. Step 5: Solve for x
    x = 124,429.78/523.63
  6. Step 6: Final answer
    x = 237.63

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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.