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Finding the Fourth Proportional to 395.40, 541.57 and 372.97

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Solution

The fourth proportional to 395.40, 541.57 and 372.97 is: 510.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.40 : 541.57 = 372.97 : x
  2. Step 2: Convert to fraction form
    395.40/541.57 = 372.97/x
  3. Step 3: Cross multiply
    395.40x = 541.57 × 372.97
  4. Step 4: Simplify right side
    395.40x = 201,987.08
  5. Step 5: Solve for x
    x = 201,987.08/395.40
  6. Step 6: Final answer
    x = 510.84

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.