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Finding the Fourth Proportional to 265.10, 395.69 and 243.45

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Solution

The fourth proportional to 265.10, 395.69 and 243.45 is: 363.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.10 : 395.69 = 243.45 : x
  2. Step 2: Convert to fraction form
    265.10/395.69 = 243.45/x
  3. Step 3: Cross multiply
    265.10x = 395.69 × 243.45
  4. Step 4: Simplify right side
    265.10x = 96,329.51
  5. Step 5: Solve for x
    x = 96,329.51/265.10
  6. Step 6: Final answer
    x = 363.38

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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.