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Finding the Fourth Proportional to 1,205.26, 1,663.24 and 653.26

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Solution

The fourth proportional to 1,205.26, 1,663.24 and 653.26 is: 901.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.26 : 1,663.24 = 653.26 : x
  2. Step 2: Convert to fraction form
    1,205.26/1,663.24 = 653.26/x
  3. Step 3: Cross multiply
    1,205.26x = 1,663.24 × 653.26
  4. Step 4: Simplify right side
    1,205.26x = 1,086,528.16
  5. Step 5: Solve for x
    x = 1,086,528.16/1,205.26
  6. Step 6: Final answer
    x = 901.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.