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Finding the Fourth Proportional to 630.87, 946.56 and 338.37

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Solution

The fourth proportional to 630.87, 946.56 and 338.37 is: 507.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.87 : 946.56 = 338.37 : x
  2. Step 2: Convert to fraction form
    630.87/946.56 = 338.37/x
  3. Step 3: Cross multiply
    630.87x = 946.56 × 338.37
  4. Step 4: Simplify right side
    630.87x = 320,287.51
  5. Step 5: Solve for x
    x = 320,287.51/630.87
  6. Step 6: Final answer
    x = 507.69

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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.