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Finding the Fourth Proportional to 319.36, 440.40 and 267.52

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Solution

The fourth proportional to 319.36, 440.40 and 267.52 is: 368.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.36 : 440.40 = 267.52 : x
  2. Step 2: Convert to fraction form
    319.36/440.40 = 267.52/x
  3. Step 3: Cross multiply
    319.36x = 440.40 × 267.52
  4. Step 4: Simplify right side
    319.36x = 117,815.81
  5. Step 5: Solve for x
    x = 117,815.81/319.36
  6. Step 6: Final answer
    x = 368.91

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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.