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Finding the Fourth Proportional to 371.06, 515.66 and 366.50

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Solution

The fourth proportional to 371.06, 515.66 and 366.50 is: 509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.06 : 515.66 = 366.50 : x
  2. Step 2: Convert to fraction form
    371.06/515.66 = 366.50/x
  3. Step 3: Cross multiply
    371.06x = 515.66 × 366.50
  4. Step 4: Simplify right side
    371.06x = 188,989.39
  5. Step 5: Solve for x
    x = 188,989.39/371.06
  6. Step 6: Final answer
    x = 509.32

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.