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Finding the Fourth Proportional to 350.20, 482.34 and 303.40

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Solution

The fourth proportional to 350.20, 482.34 and 303.40 is: 417.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.20 : 482.34 = 303.40 : x
  2. Step 2: Convert to fraction form
    350.20/482.34 = 303.40/x
  3. Step 3: Cross multiply
    350.20x = 482.34 × 303.40
  4. Step 4: Simplify right side
    350.20x = 146,341.96
  5. Step 5: Solve for x
    x = 146,341.96/350.20
  6. Step 6: Final answer
    x = 417.88

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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.