Home / 1,490.34-2,235.53-450.35

Finding the Fourth Proportional to 1,490.34, 2,235.53 and 450.35

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Solution

The fourth proportional to 1,490.34, 2,235.53 and 450.35 is: 675.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.34 : 2,235.53 = 450.35 : x
  2. Step 2: Convert to fraction form
    1,490.34/2,235.53 = 450.35/x
  3. Step 3: Cross multiply
    1,490.34x = 2,235.53 × 450.35
  4. Step 4: Simplify right side
    1,490.34x = 1,006,778.48
  5. Step 5: Solve for x
    x = 1,006,778.48/1,490.34
  6. Step 6: Final answer
    x = 675.53

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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.