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Finding the Fourth Proportional to 295.17, 443.29 and 258.72

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Solution

The fourth proportional to 295.17, 443.29 and 258.72 is: 388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.17 : 443.29 = 258.72 : x
  2. Step 2: Convert to fraction form
    295.17/443.29 = 258.72/x
  3. Step 3: Cross multiply
    295.17x = 443.29 × 258.72
  4. Step 4: Simplify right side
    295.17x = 114,687.99
  5. Step 5: Solve for x
    x = 114,687.99/295.17
  6. Step 6: Final answer
    x = 388.55

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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.