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Finding the Fourth Proportional to 395.67, 546.21 and 297.46

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Solution

The fourth proportional to 395.67, 546.21 and 297.46 is: 410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.67 : 546.21 = 297.46 : x
  2. Step 2: Convert to fraction form
    395.67/546.21 = 297.46/x
  3. Step 3: Cross multiply
    395.67x = 546.21 × 297.46
  4. Step 4: Simplify right side
    395.67x = 162,475.63
  5. Step 5: Solve for x
    x = 162,475.63/395.67
  6. Step 6: Final answer
    x = 410.63

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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.