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Finding the Fourth Proportional to 290.18, 433.45 and 246.65

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Solution

The fourth proportional to 290.18, 433.45 and 246.65 is: 368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.18 : 433.45 = 246.65 : x
  2. Step 2: Convert to fraction form
    290.18/433.45 = 246.65/x
  3. Step 3: Cross multiply
    290.18x = 433.45 × 246.65
  4. Step 4: Simplify right side
    290.18x = 106,908.58
  5. Step 5: Solve for x
    x = 106,908.58/290.18
  6. Step 6: Final answer
    x = 368.42

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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.