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Finding the Fourth Proportional to 435.94, 653.64 and 204.87

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Solution

The fourth proportional to 435.94, 653.64 and 204.87 is: 307.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.94 : 653.64 = 204.87 : x
  2. Step 2: Convert to fraction form
    435.94/653.64 = 204.87/x
  3. Step 3: Cross multiply
    435.94x = 653.64 × 204.87
  4. Step 4: Simplify right side
    435.94x = 133,912.91
  5. Step 5: Solve for x
    x = 133,912.91/435.94
  6. Step 6: Final answer
    x = 307.18

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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.