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Finding the Fourth Proportional to 504.46, 758.20 and 418.36

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Solution

The fourth proportional to 504.46, 758.20 and 418.36 is: 628.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.46 : 758.20 = 418.36 : x
  2. Step 2: Convert to fraction form
    504.46/758.20 = 418.36/x
  3. Step 3: Cross multiply
    504.46x = 758.20 × 418.36
  4. Step 4: Simplify right side
    504.46x = 317,200.55
  5. Step 5: Solve for x
    x = 317,200.55/504.46
  6. Step 6: Final answer
    x = 628.79

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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.