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Finding the Fourth Proportional to 450.59, 676.91 and 389.08

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Solution

The fourth proportional to 450.59, 676.91 and 389.08 is: 584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.59 : 676.91 = 389.08 : x
  2. Step 2: Convert to fraction form
    450.59/676.91 = 389.08/x
  3. Step 3: Cross multiply
    450.59x = 676.91 × 389.08
  4. Step 4: Simplify right side
    450.59x = 263,370.20
  5. Step 5: Solve for x
    x = 263,370.20/450.59
  6. Step 6: Final answer
    x = 584.50

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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.