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Finding the Fourth Proportional to 424.83, 637.02 and 219.32

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Solution

The fourth proportional to 424.83, 637.02 and 219.32 is: 328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.83 : 637.02 = 219.32 : x
  2. Step 2: Convert to fraction form
    424.83/637.02 = 219.32/x
  3. Step 3: Cross multiply
    424.83x = 637.02 × 219.32
  4. Step 4: Simplify right side
    424.83x = 139,708.04
  5. Step 5: Solve for x
    x = 139,708.04/424.83
  6. Step 6: Final answer
    x = 328.86

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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.