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Finding the Fourth Proportional to 589.22, 813.89 and 448.49

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Solution

The fourth proportional to 589.22, 813.89 and 448.49 is: 619.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.22 : 813.89 = 448.49 : x
  2. Step 2: Convert to fraction form
    589.22/813.89 = 448.49/x
  3. Step 3: Cross multiply
    589.22x = 813.89 × 448.49
  4. Step 4: Simplify right side
    589.22x = 365,018.58
  5. Step 5: Solve for x
    x = 365,018.58/589.22
  6. Step 6: Final answer
    x = 619.49

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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.