Home / 1,490.28-2,235.46-394.68

Finding the Fourth Proportional to 1,490.28, 2,235.46 and 394.68

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Solution

The fourth proportional to 1,490.28, 2,235.46 and 394.68 is: 592.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.28 : 2,235.46 = 394.68 : x
  2. Step 2: Convert to fraction form
    1,490.28/2,235.46 = 394.68/x
  3. Step 3: Cross multiply
    1,490.28x = 2,235.46 × 394.68
  4. Step 4: Simplify right side
    1,490.28x = 882,291.35
  5. Step 5: Solve for x
    x = 882,291.35/1,490.28
  6. Step 6: Final answer
    x = 592.03

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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.