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Finding the Fourth Proportional to 486.12, 670.82 and 265.06

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Solution

The fourth proportional to 486.12, 670.82 and 265.06 is: 365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.12 : 670.82 = 265.06 : x
  2. Step 2: Convert to fraction form
    486.12/670.82 = 265.06/x
  3. Step 3: Cross multiply
    486.12x = 670.82 × 265.06
  4. Step 4: Simplify right side
    486.12x = 177,807.55
  5. Step 5: Solve for x
    x = 177,807.55/486.12
  6. Step 6: Final answer
    x = 365.77

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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.