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Finding the Fourth Proportional to 212.91, 293.72 and 183.75

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Solution

The fourth proportional to 212.91, 293.72 and 183.75 is: 253.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.91 : 293.72 = 183.75 : x
  2. Step 2: Convert to fraction form
    212.91/293.72 = 183.75/x
  3. Step 3: Cross multiply
    212.91x = 293.72 × 183.75
  4. Step 4: Simplify right side
    212.91x = 53,970.13
  5. Step 5: Solve for x
    x = 53,970.13/212.91
  6. Step 6: Final answer
    x = 253.49

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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.