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Finding the Fourth Proportional to 403.26, 555.30 and 337.66

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Solution

The fourth proportional to 403.26, 555.30 and 337.66 is: 464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.26 : 555.30 = 337.66 : x
  2. Step 2: Convert to fraction form
    403.26/555.30 = 337.66/x
  3. Step 3: Cross multiply
    403.26x = 555.30 × 337.66
  4. Step 4: Simplify right side
    403.26x = 187,502.60
  5. Step 5: Solve for x
    x = 187,502.60/403.26
  6. Step 6: Final answer
    x = 464.97

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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.