Home / 1,021.21-1,531.88-501.46

Finding the Fourth Proportional to 1,021.21, 1,531.88 and 501.46

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Solution

The fourth proportional to 1,021.21, 1,531.88 and 501.46 is: 752.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.21 : 1,531.88 = 501.46 : x
  2. Step 2: Convert to fraction form
    1,021.21/1,531.88 = 501.46/x
  3. Step 3: Cross multiply
    1,021.21x = 1,531.88 × 501.46
  4. Step 4: Simplify right side
    1,021.21x = 768,170.21
  5. Step 5: Solve for x
    x = 768,170.21/1,021.21
  6. Step 6: Final answer
    x = 752.22

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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.