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Finding the Fourth Proportional to 641.13, 960.51 and 294.75

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Solution

The fourth proportional to 641.13, 960.51 and 294.75 is: 441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.13 : 960.51 = 294.75 : x
  2. Step 2: Convert to fraction form
    641.13/960.51 = 294.75/x
  3. Step 3: Cross multiply
    641.13x = 960.51 × 294.75
  4. Step 4: Simplify right side
    641.13x = 283,110.32
  5. Step 5: Solve for x
    x = 283,110.32/641.13
  6. Step 6: Final answer
    x = 441.58

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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.