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Finding the Fourth Proportional to 350.74, 482.60 and 321.94

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Solution

The fourth proportional to 350.74, 482.60 and 321.94 is: 442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.74 : 482.60 = 321.94 : x
  2. Step 2: Convert to fraction form
    350.74/482.60 = 321.94/x
  3. Step 3: Cross multiply
    350.74x = 482.60 × 321.94
  4. Step 4: Simplify right side
    350.74x = 155,368.24
  5. Step 5: Solve for x
    x = 155,368.24/350.74
  6. Step 6: Final answer
    x = 442.97

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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.