Home / 1,490.24-2,235.16-394.69

Finding the Fourth Proportional to 1,490.24, 2,235.16 and 394.69

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Solution

The fourth proportional to 1,490.24, 2,235.16 and 394.69 is: 591.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.24 : 2,235.16 = 394.69 : x
  2. Step 2: Convert to fraction form
    1,490.24/2,235.16 = 394.69/x
  3. Step 3: Cross multiply
    1,490.24x = 2,235.16 × 394.69
  4. Step 4: Simplify right side
    1,490.24x = 882,184.12
  5. Step 5: Solve for x
    x = 882,184.12/1,490.24
  6. Step 6: Final answer
    x = 591.98

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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.