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Finding the Fourth Proportional to 295.42, 443.21 and 258.51

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Solution

The fourth proportional to 295.42, 443.21 and 258.51 is: 387.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.42 : 443.21 = 258.51 : x
  2. Step 2: Convert to fraction form
    295.42/443.21 = 258.51/x
  3. Step 3: Cross multiply
    295.42x = 443.21 × 258.51
  4. Step 4: Simplify right side
    295.42x = 114,576.53
  5. Step 5: Solve for x
    x = 114,576.53/295.42
  6. Step 6: Final answer
    x = 387.85

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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.