Home / 1,490.33-2,235.60-394.70

Finding the Fourth Proportional to 1,490.33, 2,235.60 and 394.70

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Solution

The fourth proportional to 1,490.33, 2,235.60 and 394.70 is: 592.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.33 : 2,235.60 = 394.70 : x
  2. Step 2: Convert to fraction form
    1,490.33/2,235.60 = 394.70/x
  3. Step 3: Cross multiply
    1,490.33x = 2,235.60 × 394.70
  4. Step 4: Simplify right side
    1,490.33x = 882,380.14
  5. Step 5: Solve for x
    x = 882,380.14/1,490.33
  6. Step 6: Final answer
    x = 592.07

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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.