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Finding the Fourth Proportional to 504.35, 696.11 and 355.70

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Solution

The fourth proportional to 504.35, 696.11 and 355.70 is: 490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.35 : 696.11 = 355.70 : x
  2. Step 2: Convert to fraction form
    504.35/696.11 = 355.70/x
  3. Step 3: Cross multiply
    504.35x = 696.11 × 355.70
  4. Step 4: Simplify right side
    504.35x = 247,601.07
  5. Step 5: Solve for x
    x = 247,601.07/504.35
  6. Step 6: Final answer
    x = 490.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.