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Finding the Fourth Proportional to 431.05, 646.33 and 294.24

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Solution

The fourth proportional to 431.05, 646.33 and 294.24 is: 441.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.05 : 646.33 = 294.24 : x
  2. Step 2: Convert to fraction form
    431.05/646.33 = 294.24/x
  3. Step 3: Cross multiply
    431.05x = 646.33 × 294.24
  4. Step 4: Simplify right side
    431.05x = 190,176.14
  5. Step 5: Solve for x
    x = 190,176.14/431.05
  6. Step 6: Final answer
    x = 441.19

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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.