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Finding the Fourth Proportional to 667.17, 999.90 and 374.67

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Solution

The fourth proportional to 667.17, 999.90 and 374.67 is: 561.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.17 : 999.90 = 374.67 : x
  2. Step 2: Convert to fraction form
    667.17/999.90 = 374.67/x
  3. Step 3: Cross multiply
    667.17x = 999.90 × 374.67
  4. Step 4: Simplify right side
    667.17x = 374,632.53
  5. Step 5: Solve for x
    x = 374,632.53/667.17
  6. Step 6: Final answer
    x = 561.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.