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Finding the Fourth Proportional to 290.06, 436.90 and 264.54

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Solution

The fourth proportional to 290.06, 436.90 and 264.54 is: 398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.06 : 436.90 = 264.54 : x
  2. Step 2: Convert to fraction form
    290.06/436.90 = 264.54/x
  3. Step 3: Cross multiply
    290.06x = 436.90 × 264.54
  4. Step 4: Simplify right side
    290.06x = 115,577.53
  5. Step 5: Solve for x
    x = 115,577.53/290.06
  6. Step 6: Final answer
    x = 398.46

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.