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Finding the Fourth Proportional to 294.29, 440.07 and 258.08

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Solution

The fourth proportional to 294.29, 440.07 and 258.08 is: 385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.29 : 440.07 = 258.08 : x
  2. Step 2: Convert to fraction form
    294.29/440.07 = 258.08/x
  3. Step 3: Cross multiply
    294.29x = 440.07 × 258.08
  4. Step 4: Simplify right side
    294.29x = 113,571.07
  5. Step 5: Solve for x
    x = 113,571.07/294.29
  6. Step 6: Final answer
    x = 385.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.