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Finding the Fourth Proportional to 265.55, 396.45 and 239.63

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Solution

The fourth proportional to 265.55, 396.45 and 239.63 is: 357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.55 : 396.45 = 239.63 : x
  2. Step 2: Convert to fraction form
    265.55/396.45 = 239.63/x
  3. Step 3: Cross multiply
    265.55x = 396.45 × 239.63
  4. Step 4: Simplify right side
    265.55x = 94,999.33
  5. Step 5: Solve for x
    x = 94,999.33/265.55
  6. Step 6: Final answer
    x = 357.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.