Home / 1,225.12-1,837.95-359.50

Finding the Fourth Proportional to 1,225.12, 1,837.95 and 359.50

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Solution

The fourth proportional to 1,225.12, 1,837.95 and 359.50 is: 539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.12 : 1,837.95 = 359.50 : x
  2. Step 2: Convert to fraction form
    1,225.12/1,837.95 = 359.50/x
  3. Step 3: Cross multiply
    1,225.12x = 1,837.95 × 359.50
  4. Step 4: Simplify right side
    1,225.12x = 660,743.03
  5. Step 5: Solve for x
    x = 660,743.03/1,225.12
  6. Step 6: Final answer
    x = 539.33

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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.