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Finding the Fourth Proportional to 456.50, 628.61 and 446.28

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Solution

The fourth proportional to 456.50, 628.61 and 446.28 is: 614.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.50 : 628.61 = 446.28 : x
  2. Step 2: Convert to fraction form
    456.50/628.61 = 446.28/x
  3. Step 3: Cross multiply
    456.50x = 628.61 × 446.28
  4. Step 4: Simplify right side
    456.50x = 280,533.84
  5. Step 5: Solve for x
    x = 280,533.84/456.50
  6. Step 6: Final answer
    x = 614.54

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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.