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Finding the Fourth Proportional to 391, 582.37 and 370.44

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Solution

The fourth proportional to 391, 582.37 and 370.44 is: 551.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391 : 582.37 = 370.44 : x
  2. Step 2: Convert to fraction form
    391/582.37 = 370.44/x
  3. Step 3: Cross multiply
    391x = 582.37 × 370.44
  4. Step 4: Simplify right side
    391x = 215,733.14
  5. Step 5: Solve for x
    x = 215,733.14/391
  6. Step 6: Final answer
    x = 551.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.