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Finding the Fourth Proportional to 1,310.52, 1,965.62 and 336.56

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Solution

The fourth proportional to 1,310.52, 1,965.62 and 336.56 is: 504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.52 : 1,965.62 = 336.56 : x
  2. Step 2: Convert to fraction form
    1,310.52/1,965.62 = 336.56/x
  3. Step 3: Cross multiply
    1,310.52x = 1,965.62 × 336.56
  4. Step 4: Simplify right side
    1,310.52x = 661,549.07
  5. Step 5: Solve for x
    x = 661,549.07/1,310.52
  6. Step 6: Final answer
    x = 504.80

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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.