Home / 1,022.60-1,534.08-445.16

Finding the Fourth Proportional to 1,022.60, 1,534.08 and 445.16

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Solution

The fourth proportional to 1,022.60, 1,534.08 and 445.16 is: 667.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.60 : 1,534.08 = 445.16 : x
  2. Step 2: Convert to fraction form
    1,022.60/1,534.08 = 445.16/x
  3. Step 3: Cross multiply
    1,022.60x = 1,534.08 × 445.16
  4. Step 4: Simplify right side
    1,022.60x = 682,911.05
  5. Step 5: Solve for x
    x = 682,911.05/1,022.60
  6. Step 6: Final answer
    x = 667.82

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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.