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Finding the Fourth Proportional to 371.44, 511.44 and 283

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Solution

The fourth proportional to 371.44, 511.44 and 283 is: 389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.44 : 511.44 = 283 : x
  2. Step 2: Convert to fraction form
    371.44/511.44 = 283/x
  3. Step 3: Cross multiply
    371.44x = 511.44 × 283
  4. Step 4: Simplify right side
    371.44x = 144,737.52
  5. Step 5: Solve for x
    x = 144,737.52/371.44
  6. Step 6: Final answer
    x = 389.67

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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.