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Finding the Fourth Proportional to 383.63, 529.40 and 267.26

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Solution

The fourth proportional to 383.63, 529.40 and 267.26 is: 368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.63 : 529.40 = 267.26 : x
  2. Step 2: Convert to fraction form
    383.63/529.40 = 267.26/x
  3. Step 3: Cross multiply
    383.63x = 529.40 × 267.26
  4. Step 4: Simplify right side
    383.63x = 141,485.47
  5. Step 5: Solve for x
    x = 141,485.47/383.63
  6. Step 6: Final answer
    x = 368.81

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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.