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Finding the Fourth Proportional to 294.37, 406.19 and 189.47

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Solution

The fourth proportional to 294.37, 406.19 and 189.47 is: 261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.37 : 406.19 = 189.47 : x
  2. Step 2: Convert to fraction form
    294.37/406.19 = 189.47/x
  3. Step 3: Cross multiply
    294.37x = 406.19 × 189.47
  4. Step 4: Simplify right side
    294.37x = 76,962.31
  5. Step 5: Solve for x
    x = 76,962.31/294.37
  6. Step 6: Final answer
    x = 261.45

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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.