Home / 1,501.21-2,251.65-405.68

Finding the Fourth Proportional to 1,501.21, 2,251.65 and 405.68

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Solution

The fourth proportional to 1,501.21, 2,251.65 and 405.68 is: 608.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.21 : 2,251.65 = 405.68 : x
  2. Step 2: Convert to fraction form
    1,501.21/2,251.65 = 405.68/x
  3. Step 3: Cross multiply
    1,501.21x = 2,251.65 × 405.68
  4. Step 4: Simplify right side
    1,501.21x = 913,455.00
  5. Step 5: Solve for x
    x = 913,455.00/1,501.21
  6. Step 6: Final answer
    x = 608.48

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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.