Home / 1,225.25-1,838.15-359.63

Finding the Fourth Proportional to 1,225.25, 1,838.15 and 359.63

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Solution

The fourth proportional to 1,225.25, 1,838.15 and 359.63 is: 539.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.25 : 1,838.15 = 359.63 : x
  2. Step 2: Convert to fraction form
    1,225.25/1,838.15 = 359.63/x
  3. Step 3: Cross multiply
    1,225.25x = 1,838.15 × 359.63
  4. Step 4: Simplify right side
    1,225.25x = 661,042.90
  5. Step 5: Solve for x
    x = 661,042.90/1,225.25
  6. Step 6: Final answer
    x = 539.52

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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.