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Finding the Fourth Proportional to 350.87, 528.23 and 318.74

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Solution

The fourth proportional to 350.87, 528.23 and 318.74 is: 479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.87 : 528.23 = 318.74 : x
  2. Step 2: Convert to fraction form
    350.87/528.23 = 318.74/x
  3. Step 3: Cross multiply
    350.87x = 528.23 × 318.74
  4. Step 4: Simplify right side
    350.87x = 168,366.19
  5. Step 5: Solve for x
    x = 168,366.19/350.87
  6. Step 6: Final answer
    x = 479.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.