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Finding the Fourth Proportional to 415.64, 573.64 and 268.70

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Solution

The fourth proportional to 415.64, 573.64 and 268.70 is: 370.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.64 : 573.64 = 268.70 : x
  2. Step 2: Convert to fraction form
    415.64/573.64 = 268.70/x
  3. Step 3: Cross multiply
    415.64x = 573.64 × 268.70
  4. Step 4: Simplify right side
    415.64x = 154,137.07
  5. Step 5: Solve for x
    x = 154,137.07/415.64
  6. Step 6: Final answer
    x = 370.84

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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.