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Finding the Fourth Proportional to 670.50, 925.66 and 450.62

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Solution

The fourth proportional to 670.50, 925.66 and 450.62 is: 622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.50 : 925.66 = 450.62 : x
  2. Step 2: Convert to fraction form
    670.50/925.66 = 450.62/x
  3. Step 3: Cross multiply
    670.50x = 925.66 × 450.62
  4. Step 4: Simplify right side
    670.50x = 417,120.91
  5. Step 5: Solve for x
    x = 417,120.91/670.50
  6. Step 6: Final answer
    x = 622.10

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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.