Home / 1,490.24-2,235.63-613.23

Finding the Fourth Proportional to 1,490.24, 2,235.63 and 613.23

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Solution

The fourth proportional to 1,490.24, 2,235.63 and 613.23 is: 919.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.24 : 2,235.63 = 613.23 : x
  2. Step 2: Convert to fraction form
    1,490.24/2,235.63 = 613.23/x
  3. Step 3: Cross multiply
    1,490.24x = 2,235.63 × 613.23
  4. Step 4: Simplify right side
    1,490.24x = 1,370,941.14
  5. Step 5: Solve for x
    x = 1,370,941.14/1,490.24
  6. Step 6: Final answer
    x = 919.95

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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.