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Finding the Fourth Proportional to 291.69, 402.57 and 175.28

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Solution

The fourth proportional to 291.69, 402.57 and 175.28 is: 241.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.69 : 402.57 = 175.28 : x
  2. Step 2: Convert to fraction form
    291.69/402.57 = 175.28/x
  3. Step 3: Cross multiply
    291.69x = 402.57 × 175.28
  4. Step 4: Simplify right side
    291.69x = 70,560.46
  5. Step 5: Solve for x
    x = 70,560.46/291.69
  6. Step 6: Final answer
    x = 241.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.