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Finding the Fourth Proportional to 383.64, 529.44 and 236.16

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Solution

The fourth proportional to 383.64, 529.44 and 236.16 is: 325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.64 : 529.44 = 236.16 : x
  2. Step 2: Convert to fraction form
    383.64/529.44 = 236.16/x
  3. Step 3: Cross multiply
    383.64x = 529.44 × 236.16
  4. Step 4: Simplify right side
    383.64x = 125,032.55
  5. Step 5: Solve for x
    x = 125,032.55/383.64
  6. Step 6: Final answer
    x = 325.91

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Why These Related Problems?

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