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Finding the Fourth Proportional to 312.36, 468.26 and 202.70

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Solution

The fourth proportional to 312.36, 468.26 and 202.70 is: 303.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.36 : 468.26 = 202.70 : x
  2. Step 2: Convert to fraction form
    312.36/468.26 = 202.70/x
  3. Step 3: Cross multiply
    312.36x = 468.26 × 202.70
  4. Step 4: Simplify right side
    312.36x = 94,916.30
  5. Step 5: Solve for x
    x = 94,916.30/312.36
  6. Step 6: Final answer
    x = 303.87

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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.