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Finding the Fourth Proportional to 602.19, 830.84 and 353.56

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Solution

The fourth proportional to 602.19, 830.84 and 353.56 is: 487.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.19 : 830.84 = 353.56 : x
  2. Step 2: Convert to fraction form
    602.19/830.84 = 353.56/x
  3. Step 3: Cross multiply
    602.19x = 830.84 × 353.56
  4. Step 4: Simplify right side
    602.19x = 293,751.79
  5. Step 5: Solve for x
    x = 293,751.79/602.19
  6. Step 6: Final answer
    x = 487.81

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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.