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Finding the Fourth Proportional to 477.08, 714.94 and 282.12

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Solution

The fourth proportional to 477.08, 714.94 and 282.12 is: 422.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.08 : 714.94 = 282.12 : x
  2. Step 2: Convert to fraction form
    477.08/714.94 = 282.12/x
  3. Step 3: Cross multiply
    477.08x = 714.94 × 282.12
  4. Step 4: Simplify right side
    477.08x = 201,698.87
  5. Step 5: Solve for x
    x = 201,698.87/477.08
  6. Step 6: Final answer
    x = 422.78

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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.