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Finding the Fourth Proportional to 1,260.02, 1,890.13 and 394.33

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Solution

The fourth proportional to 1,260.02, 1,890.13 and 394.33 is: 591.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.02 : 1,890.13 = 394.33 : x
  2. Step 2: Convert to fraction form
    1,260.02/1,890.13 = 394.33/x
  3. Step 3: Cross multiply
    1,260.02x = 1,890.13 × 394.33
  4. Step 4: Simplify right side
    1,260.02x = 745,334.96
  5. Step 5: Solve for x
    x = 745,334.96/1,260.02
  6. Step 6: Final answer
    x = 591.53

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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.