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Finding the Fourth Proportional to 310.98, 429.33 and 206.04

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Solution

The fourth proportional to 310.98, 429.33 and 206.04 is: 284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.98 : 429.33 = 206.04 : x
  2. Step 2: Convert to fraction form
    310.98/429.33 = 206.04/x
  3. Step 3: Cross multiply
    310.98x = 429.33 × 206.04
  4. Step 4: Simplify right side
    310.98x = 88,459.15
  5. Step 5: Solve for x
    x = 88,459.15/310.98
  6. Step 6: Final answer
    x = 284.45

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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.