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Finding the Fourth Proportional to 1,490.25, 2,235.69 and 450.33

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Solution

The fourth proportional to 1,490.25, 2,235.69 and 450.33 is: 675.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.25 : 2,235.69 = 450.33 : x
  2. Step 2: Convert to fraction form
    1,490.25/2,235.69 = 450.33/x
  3. Step 3: Cross multiply
    1,490.25x = 2,235.69 × 450.33
  4. Step 4: Simplify right side
    1,490.25x = 1,006,798.28
  5. Step 5: Solve for x
    x = 1,006,798.28/1,490.25
  6. Step 6: Final answer
    x = 675.59

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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.