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Finding the Fourth Proportional to 375.79, 563.72 and 170.45

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Solution

The fourth proportional to 375.79, 563.72 and 170.45 is: 255.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.79 : 563.72 = 170.45 : x
  2. Step 2: Convert to fraction form
    375.79/563.72 = 170.45/x
  3. Step 3: Cross multiply
    375.79x = 563.72 × 170.45
  4. Step 4: Simplify right side
    375.79x = 96,086.63
  5. Step 5: Solve for x
    x = 96,086.63/375.79
  6. Step 6: Final answer
    x = 255.69

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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.