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Finding the Fourth Proportional to 368.82, 509.50 and 258.26

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Solution

The fourth proportional to 368.82, 509.50 and 258.26 is: 356.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.82 : 509.50 = 258.26 : x
  2. Step 2: Convert to fraction form
    368.82/509.50 = 258.26/x
  3. Step 3: Cross multiply
    368.82x = 509.50 × 258.26
  4. Step 4: Simplify right side
    368.82x = 131,583.47
  5. Step 5: Solve for x
    x = 131,583.47/368.82
  6. Step 6: Final answer
    x = 356.77

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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.