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Finding the Fourth Proportional to 371.40, 561.30 and 365.02

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Solution

The fourth proportional to 371.40, 561.30 and 365.02 is: 551.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.40 : 561.30 = 365.02 : x
  2. Step 2: Convert to fraction form
    371.40/561.30 = 365.02/x
  3. Step 3: Cross multiply
    371.40x = 561.30 × 365.02
  4. Step 4: Simplify right side
    371.40x = 204,885.73
  5. Step 5: Solve for x
    x = 204,885.73/371.40
  6. Step 6: Final answer
    x = 551.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.