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Finding the Fourth Proportional to 290.46, 401.02 and 259.32

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Solution

The fourth proportional to 290.46, 401.02 and 259.32 is: 358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.46 : 401.02 = 259.32 : x
  2. Step 2: Convert to fraction form
    290.46/401.02 = 259.32/x
  3. Step 3: Cross multiply
    290.46x = 401.02 × 259.32
  4. Step 4: Simplify right side
    290.46x = 103,992.51
  5. Step 5: Solve for x
    x = 103,992.51/290.46
  6. Step 6: Final answer
    x = 358.03

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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.