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Finding the Fourth Proportional to 651.21, 898.68 and 371.43

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Solution

The fourth proportional to 651.21, 898.68 and 371.43 is: 512.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.21 : 898.68 = 371.43 : x
  2. Step 2: Convert to fraction form
    651.21/898.68 = 371.43/x
  3. Step 3: Cross multiply
    651.21x = 898.68 × 371.43
  4. Step 4: Simplify right side
    651.21x = 333,796.71
  5. Step 5: Solve for x
    x = 333,796.71/651.21
  6. Step 6: Final answer
    x = 512.58

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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.