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Finding the Fourth Proportional to 403.52, 604.19 and 210.74

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Solution

The fourth proportional to 403.52, 604.19 and 210.74 is: 315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.52 : 604.19 = 210.74 : x
  2. Step 2: Convert to fraction form
    403.52/604.19 = 210.74/x
  3. Step 3: Cross multiply
    403.52x = 604.19 × 210.74
  4. Step 4: Simplify right side
    403.52x = 127,326.77
  5. Step 5: Solve for x
    x = 127,326.77/403.52
  6. Step 6: Final answer
    x = 315.54

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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.