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Finding the Fourth Proportional to 267.08, 368.90 and 258.57

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Solution

The fourth proportional to 267.08, 368.90 and 258.57 is: 357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.08 : 368.90 = 258.57 : x
  2. Step 2: Convert to fraction form
    267.08/368.90 = 258.57/x
  3. Step 3: Cross multiply
    267.08x = 368.90 × 258.57
  4. Step 4: Simplify right side
    267.08x = 95,385.18
  5. Step 5: Solve for x
    x = 95,385.18/267.08
  6. Step 6: Final answer
    x = 357.15

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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.