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Finding the Fourth Proportional to 270.08, 372.58 and 153.64

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Solution

The fourth proportional to 270.08, 372.58 and 153.64 is: 211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.08 : 372.58 = 153.64 : x
  2. Step 2: Convert to fraction form
    270.08/372.58 = 153.64/x
  3. Step 3: Cross multiply
    270.08x = 372.58 × 153.64
  4. Step 4: Simplify right side
    270.08x = 57,243.19
  5. Step 5: Solve for x
    x = 57,243.19/270.08
  6. Step 6: Final answer
    x = 211.95

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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.