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Finding the Fourth Proportional to 383.49, 528.64 and 235.87

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Solution

The fourth proportional to 383.49, 528.64 and 235.87 is: 325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.49 : 528.64 = 235.87 : x
  2. Step 2: Convert to fraction form
    383.49/528.64 = 235.87/x
  3. Step 3: Cross multiply
    383.49x = 528.64 × 235.87
  4. Step 4: Simplify right side
    383.49x = 124,688.41
  5. Step 5: Solve for x
    x = 124,688.41/383.49
  6. Step 6: Final answer
    x = 325.14

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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.