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Finding the Fourth Proportional to 316.64, 437.29 and 282.26

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Solution

The fourth proportional to 316.64, 437.29 and 282.26 is: 389.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.64 : 437.29 = 282.26 : x
  2. Step 2: Convert to fraction form
    316.64/437.29 = 282.26/x
  3. Step 3: Cross multiply
    316.64x = 437.29 × 282.26
  4. Step 4: Simplify right side
    316.64x = 123,429.86
  5. Step 5: Solve for x
    x = 123,429.86/316.64
  6. Step 6: Final answer
    x = 389.81

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