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Finding the Fourth Proportional to 267.02, 368.21 and 188.30

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Solution

The fourth proportional to 267.02, 368.21 and 188.30 is: 259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.02 : 368.21 = 188.30 : x
  2. Step 2: Convert to fraction form
    267.02/368.21 = 188.30/x
  3. Step 3: Cross multiply
    267.02x = 368.21 × 188.30
  4. Step 4: Simplify right side
    267.02x = 69,331.16
  5. Step 5: Solve for x
    x = 69,331.16/267.02
  6. Step 6: Final answer
    x = 259.65

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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.