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Finding the Fourth Proportional to 455.27, 628.56 and 350.16

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Solution

The fourth proportional to 455.27, 628.56 and 350.16 is: 483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.27 : 628.56 = 350.16 : x
  2. Step 2: Convert to fraction form
    455.27/628.56 = 350.16/x
  3. Step 3: Cross multiply
    455.27x = 628.56 × 350.16
  4. Step 4: Simplify right side
    455.27x = 220,096.57
  5. Step 5: Solve for x
    x = 220,096.57/455.27
  6. Step 6: Final answer
    x = 483.45

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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.