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Finding the Fourth Proportional to 450.90, 617.94 and 450.18

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Solution

The fourth proportional to 450.90, 617.94 and 450.18 is: 616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.90 : 617.94 = 450.18 : x
  2. Step 2: Convert to fraction form
    450.90/617.94 = 450.18/x
  3. Step 3: Cross multiply
    450.90x = 617.94 × 450.18
  4. Step 4: Simplify right side
    450.90x = 278,184.23
  5. Step 5: Solve for x
    x = 278,184.23/450.90
  6. Step 6: Final answer
    x = 616.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.