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Finding the Fourth Proportional to 391.17, 540.39 and 362.01

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Solution

The fourth proportional to 391.17, 540.39 and 362.01 is: 500.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.17 : 540.39 = 362.01 : x
  2. Step 2: Convert to fraction form
    391.17/540.39 = 362.01/x
  3. Step 3: Cross multiply
    391.17x = 540.39 × 362.01
  4. Step 4: Simplify right side
    391.17x = 195,626.58
  5. Step 5: Solve for x
    x = 195,626.58/391.17
  6. Step 6: Final answer
    x = 500.11

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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.