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Finding the Fourth Proportional to 336.78, 504.77 and 214.88

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Solution

The fourth proportional to 336.78, 504.77 and 214.88 is: 322.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.78 : 504.77 = 214.88 : x
  2. Step 2: Convert to fraction form
    336.78/504.77 = 214.88/x
  3. Step 3: Cross multiply
    336.78x = 504.77 × 214.88
  4. Step 4: Simplify right side
    336.78x = 108,461.38
  5. Step 5: Solve for x
    x = 108,461.38/336.78
  6. Step 6: Final answer
    x = 322.05

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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.