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Finding the Fourth Proportional to 1,261.43, 1,892.14 and 336.99

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Solution

The fourth proportional to 1,261.43, 1,892.14 and 336.99 is: 505.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.43 : 1,892.14 = 336.99 : x
  2. Step 2: Convert to fraction form
    1,261.43/1,892.14 = 336.99/x
  3. Step 3: Cross multiply
    1,261.43x = 1,892.14 × 336.99
  4. Step 4: Simplify right side
    1,261.43x = 637,632.26
  5. Step 5: Solve for x
    x = 637,632.26/1,261.43
  6. Step 6: Final answer
    x = 505.48

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Double scale
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1.5x scale

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.