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Finding the Fourth Proportional to 415.68, 573.65 and 268.60

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Solution

The fourth proportional to 415.68, 573.65 and 268.60 is: 370.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.68 : 573.65 = 268.60 : x
  2. Step 2: Convert to fraction form
    415.68/573.65 = 268.60/x
  3. Step 3: Cross multiply
    415.68x = 573.65 × 268.60
  4. Step 4: Simplify right side
    415.68x = 154,082.39
  5. Step 5: Solve for x
    x = 154,082.39/415.68
  6. Step 6: Final answer
    x = 370.68

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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.