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Finding the Fourth Proportional to 455.18, 628.49 and 350.10

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Solution

The fourth proportional to 455.18, 628.49 and 350.10 is: 483.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.18 : 628.49 = 350.10 : x
  2. Step 2: Convert to fraction form
    455.18/628.49 = 350.10/x
  3. Step 3: Cross multiply
    455.18x = 628.49 × 350.10
  4. Step 4: Simplify right side
    455.18x = 220,035.22
  5. Step 5: Solve for x
    x = 220,035.22/455.18
  6. Step 6: Final answer
    x = 483.41

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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.