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Finding the Fourth Proportional to 621, 931.77 and 236.52

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Solution

The fourth proportional to 621, 931.77 and 236.52 is: 354.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    621 : 931.77 = 236.52 : x
  2. Step 2: Convert to fraction form
    621/931.77 = 236.52/x
  3. Step 3: Cross multiply
    621x = 931.77 × 236.52
  4. Step 4: Simplify right side
    621x = 220,382.24
  5. Step 5: Solve for x
    x = 220,382.24/621
  6. Step 6: Final answer
    x = 354.88

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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.