Home / 1,501.26-2,251.70-405.70

Finding the Fourth Proportional to 1,501.26, 2,251.70 and 405.70

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Solution

The fourth proportional to 1,501.26, 2,251.70 and 405.70 is: 608.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.26 : 2,251.70 = 405.70 : x
  2. Step 2: Convert to fraction form
    1,501.26/2,251.70 = 405.70/x
  3. Step 3: Cross multiply
    1,501.26x = 2,251.70 × 405.70
  4. Step 4: Simplify right side
    1,501.26x = 913,514.69
  5. Step 5: Solve for x
    x = 913,514.69/1,501.26
  6. Step 6: Final answer
    x = 608.50

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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.