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Finding the Fourth Proportional to 383.18, 528.62 and 235.76

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Solution

The fourth proportional to 383.18, 528.62 and 235.76 is: 325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.18 : 528.62 = 235.76 : x
  2. Step 2: Convert to fraction form
    383.18/528.62 = 235.76/x
  3. Step 3: Cross multiply
    383.18x = 528.62 × 235.76
  4. Step 4: Simplify right side
    383.18x = 124,627.45
  5. Step 5: Solve for x
    x = 124,627.45/383.18
  6. Step 6: Final answer
    x = 325.25

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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.