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Finding the Fourth Proportional to 371.68, 554.36 and 365.20

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Solution

The fourth proportional to 371.68, 554.36 and 365.20 is: 544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.68 : 554.36 = 365.20 : x
  2. Step 2: Convert to fraction form
    371.68/554.36 = 365.20/x
  3. Step 3: Cross multiply
    371.68x = 554.36 × 365.20
  4. Step 4: Simplify right side
    371.68x = 202,452.27
  5. Step 5: Solve for x
    x = 202,452.27/371.68
  6. Step 6: Final answer
    x = 544.70

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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.