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Finding the Fourth Proportional to 580.74, 801.80 and 371.15

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Solution

The fourth proportional to 580.74, 801.80 and 371.15 is: 512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.74 : 801.80 = 371.15 : x
  2. Step 2: Convert to fraction form
    580.74/801.80 = 371.15/x
  3. Step 3: Cross multiply
    580.74x = 801.80 × 371.15
  4. Step 4: Simplify right side
    580.74x = 297,582.21
  5. Step 5: Solve for x
    x = 297,582.21/580.74
  6. Step 6: Final answer
    x = 512.42

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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.