Home / 1,501.35-2,251.76-405.80

Finding the Fourth Proportional to 1,501.35, 2,251.76 and 405.80

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Solution

The fourth proportional to 1,501.35, 2,251.76 and 405.80 is: 608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.35 : 2,251.76 = 405.80 : x
  2. Step 2: Convert to fraction form
    1,501.35/2,251.76 = 405.80/x
  3. Step 3: Cross multiply
    1,501.35x = 2,251.76 × 405.80
  4. Step 4: Simplify right side
    1,501.35x = 913,770.85
  5. Step 5: Solve for x
    x = 913,770.85/1,501.35
  6. Step 6: Final answer
    x = 608.63

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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.