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Finding the Fourth Proportional to 435.62, 653.49 and 147.02

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Solution

The fourth proportional to 435.62, 653.49 and 147.02 is: 220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.62 : 653.49 = 147.02 : x
  2. Step 2: Convert to fraction form
    435.62/653.49 = 147.02/x
  3. Step 3: Cross multiply
    435.62x = 653.49 × 147.02
  4. Step 4: Simplify right side
    435.62x = 96,076.10
  5. Step 5: Solve for x
    x = 96,076.10/435.62
  6. Step 6: Final answer
    x = 220.55

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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.