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Finding the Fourth Proportional to 383.46, 531.90 and 370.35

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Solution

The fourth proportional to 383.46, 531.90 and 370.35 is: 513.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.46 : 531.90 = 370.35 : x
  2. Step 2: Convert to fraction form
    383.46/531.90 = 370.35/x
  3. Step 3: Cross multiply
    383.46x = 531.90 × 370.35
  4. Step 4: Simplify right side
    383.46x = 196,989.17
  5. Step 5: Solve for x
    x = 196,989.17/383.46
  6. Step 6: Final answer
    x = 513.72

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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.