Home / 1,021.53-1,531.38-444.09

Finding the Fourth Proportional to 1,021.53, 1,531.38 and 444.09

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Solution

The fourth proportional to 1,021.53, 1,531.38 and 444.09 is: 665.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.53 : 1,531.38 = 444.09 : x
  2. Step 2: Convert to fraction form
    1,021.53/1,531.38 = 444.09/x
  3. Step 3: Cross multiply
    1,021.53x = 1,531.38 × 444.09
  4. Step 4: Simplify right side
    1,021.53x = 680,070.54
  5. Step 5: Solve for x
    x = 680,070.54/1,021.53
  6. Step 6: Final answer
    x = 665.74

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1.5x scale

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.