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Finding the Fourth Proportional to 1,307.30, 1,961.01 and 333.41

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Solution

The fourth proportional to 1,307.30, 1,961.01 and 333.41 is: 500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.30 : 1,961.01 = 333.41 : x
  2. Step 2: Convert to fraction form
    1,307.30/1,961.01 = 333.41/x
  3. Step 3: Cross multiply
    1,307.30x = 1,961.01 × 333.41
  4. Step 4: Simplify right side
    1,307.30x = 653,810.54
  5. Step 5: Solve for x
    x = 653,810.54/1,307.30
  6. Step 6: Final answer
    x = 500.12

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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.