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Finding the Fourth Proportional to 437.07, 655.29 and 220.50

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Solution

The fourth proportional to 437.07, 655.29 and 220.50 is: 330.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.07 : 655.29 = 220.50 : x
  2. Step 2: Convert to fraction form
    437.07/655.29 = 220.50/x
  3. Step 3: Cross multiply
    437.07x = 655.29 × 220.50
  4. Step 4: Simplify right side
    437.07x = 144,491.45
  5. Step 5: Solve for x
    x = 144,491.45/437.07
  6. Step 6: Final answer
    x = 330.59

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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.