Home / 1,225.29-1,837.56-445.20

Finding the Fourth Proportional to 1,225.29, 1,837.56 and 445.20

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Solution

The fourth proportional to 1,225.29, 1,837.56 and 445.20 is: 667.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.29 : 1,837.56 = 445.20 : x
  2. Step 2: Convert to fraction form
    1,225.29/1,837.56 = 445.20/x
  3. Step 3: Cross multiply
    1,225.29x = 1,837.56 × 445.20
  4. Step 4: Simplify right side
    1,225.29x = 818,081.71
  5. Step 5: Solve for x
    x = 818,081.71/1,225.29
  6. Step 6: Final answer
    x = 667.66

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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.