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Finding the Fourth Proportional to 270.63, 373.55 and 212.31

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Solution

The fourth proportional to 270.63, 373.55 and 212.31 is: 293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.63 : 373.55 = 212.31 : x
  2. Step 2: Convert to fraction form
    270.63/373.55 = 212.31/x
  3. Step 3: Cross multiply
    270.63x = 373.55 × 212.31
  4. Step 4: Simplify right side
    270.63x = 79,308.40
  5. Step 5: Solve for x
    x = 79,308.40/270.63
  6. Step 6: Final answer
    x = 293.05

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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.