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Finding the Fourth Proportional to 238.55, 357.12 and 177.95

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Solution

The fourth proportional to 238.55, 357.12 and 177.95 is: 266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.55 : 357.12 = 177.95 : x
  2. Step 2: Convert to fraction form
    238.55/357.12 = 177.95/x
  3. Step 3: Cross multiply
    238.55x = 357.12 × 177.95
  4. Step 4: Simplify right side
    238.55x = 63,549.50
  5. Step 5: Solve for x
    x = 63,549.50/238.55
  6. Step 6: Final answer
    x = 266.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.