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Finding the Fourth Proportional to 461.87, 637.03 and 321.99

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Solution

The fourth proportional to 461.87, 637.03 and 321.99 is: 444.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.87 : 637.03 = 321.99 : x
  2. Step 2: Convert to fraction form
    461.87/637.03 = 321.99/x
  3. Step 3: Cross multiply
    461.87x = 637.03 × 321.99
  4. Step 4: Simplify right side
    461.87x = 205,117.29
  5. Step 5: Solve for x
    x = 205,117.29/461.87
  6. Step 6: Final answer
    x = 444.10

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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.