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Finding the Fourth Proportional to 435.88, 653.88 and 143.29

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Solution

The fourth proportional to 435.88, 653.88 and 143.29 is: 214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.88 : 653.88 = 143.29 : x
  2. Step 2: Convert to fraction form
    435.88/653.88 = 143.29/x
  3. Step 3: Cross multiply
    435.88x = 653.88 × 143.29
  4. Step 4: Simplify right side
    435.88x = 93,695.82
  5. Step 5: Solve for x
    x = 93,695.82/435.88
  6. Step 6: Final answer
    x = 214.96

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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.