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Finding the Fourth Proportional to 450.53, 674.56 and 391.67

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Solution

The fourth proportional to 450.53, 674.56 and 391.67 is: 586.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.53 : 674.56 = 391.67 : x
  2. Step 2: Convert to fraction form
    450.53/674.56 = 391.67/x
  3. Step 3: Cross multiply
    450.53x = 674.56 × 391.67
  4. Step 4: Simplify right side
    450.53x = 264,204.92
  5. Step 5: Solve for x
    x = 264,204.92/450.53
  6. Step 6: Final answer
    x = 586.44

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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.