Home / 1,490.10-2,233.53-758.67

Finding the Fourth Proportional to 1,490.10, 2,233.53 and 758.67

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Solution

The fourth proportional to 1,490.10, 2,233.53 and 758.67 is: 1,137.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.10 : 2,233.53 = 758.67 : x
  2. Step 2: Convert to fraction form
    1,490.10/2,233.53 = 758.67/x
  3. Step 3: Cross multiply
    1,490.10x = 2,233.53 × 758.67
  4. Step 4: Simplify right side
    1,490.10x = 1,694,512.21
  5. Step 5: Solve for x
    x = 1,694,512.21/1,490.10
  6. Step 6: Final answer
    x = 1,137.18

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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.