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Finding the Fourth Proportional to 370.85, 511.99 and 283.37

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Solution

The fourth proportional to 370.85, 511.99 and 283.37 is: 391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.85 : 511.99 = 283.37 : x
  2. Step 2: Convert to fraction form
    370.85/511.99 = 283.37/x
  3. Step 3: Cross multiply
    370.85x = 511.99 × 283.37
  4. Step 4: Simplify right side
    370.85x = 145,079.34
  5. Step 5: Solve for x
    x = 145,079.34/370.85
  6. Step 6: Final answer
    x = 391.21

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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.