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Finding the Fourth Proportional to 336.71, 506.05 and 279.30

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Solution

The fourth proportional to 336.71, 506.05 and 279.30 is: 419.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.71 : 506.05 = 279.30 : x
  2. Step 2: Convert to fraction form
    336.71/506.05 = 279.30/x
  3. Step 3: Cross multiply
    336.71x = 506.05 × 279.30
  4. Step 4: Simplify right side
    336.71x = 141,339.77
  5. Step 5: Solve for x
    x = 141,339.77/336.71
  6. Step 6: Final answer
    x = 419.77

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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.