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Finding the Fourth Proportional to 403.45, 608.19 and 376.66

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Solution

The fourth proportional to 403.45, 608.19 and 376.66 is: 567.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.45 : 608.19 = 376.66 : x
  2. Step 2: Convert to fraction form
    403.45/608.19 = 376.66/x
  3. Step 3: Cross multiply
    403.45x = 608.19 × 376.66
  4. Step 4: Simplify right side
    403.45x = 229,077.91
  5. Step 5: Solve for x
    x = 229,077.91/403.45
  6. Step 6: Final answer
    x = 567.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.