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Finding the Fourth Proportional to 435.82, 653.74 and 147.26

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Solution

The fourth proportional to 435.82, 653.74 and 147.26 is: 220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.82 : 653.74 = 147.26 : x
  2. Step 2: Convert to fraction form
    435.82/653.74 = 147.26/x
  3. Step 3: Cross multiply
    435.82x = 653.74 × 147.26
  4. Step 4: Simplify right side
    435.82x = 96,266.12
  5. Step 5: Solve for x
    x = 96,266.12/435.82
  6. Step 6: Final answer
    x = 220.89

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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.