Home / 1,490.20-2,233.41-623.50

Finding the Fourth Proportional to 1,490.20, 2,233.41 and 623.50

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Solution

The fourth proportional to 1,490.20, 2,233.41 and 623.50 is: 934.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.20 : 2,233.41 = 623.50 : x
  2. Step 2: Convert to fraction form
    1,490.20/2,233.41 = 623.50/x
  3. Step 3: Cross multiply
    1,490.20x = 2,233.41 × 623.50
  4. Step 4: Simplify right side
    1,490.20x = 1,392,531.14
  5. Step 5: Solve for x
    x = 1,392,531.14/1,490.20
  6. Step 6: Final answer
    x = 934.46

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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.