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Finding the Fourth Proportional to 287.08, 396.10 and 183.72

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Solution

The fourth proportional to 287.08, 396.10 and 183.72 is: 253.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.08 : 396.10 = 183.72 : x
  2. Step 2: Convert to fraction form
    287.08/396.10 = 183.72/x
  3. Step 3: Cross multiply
    287.08x = 396.10 × 183.72
  4. Step 4: Simplify right side
    287.08x = 72,771.49
  5. Step 5: Solve for x
    x = 72,771.49/287.08
  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.