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Finding the Fourth Proportional to 350.51, 525.14 and 220.31

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Solution

The fourth proportional to 350.51, 525.14 and 220.31 is: 330.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.51 : 525.14 = 220.31 : x
  2. Step 2: Convert to fraction form
    350.51/525.14 = 220.31/x
  3. Step 3: Cross multiply
    350.51x = 525.14 × 220.31
  4. Step 4: Simplify right side
    350.51x = 115,689.87
  5. Step 5: Solve for x
    x = 115,689.87/350.51
  6. Step 6: Final answer
    x = 330.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.