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Finding the Fourth Proportional to 344.10, 474.54 and 258.59

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Solution

The fourth proportional to 344.10, 474.54 and 258.59 is: 356.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.10 : 474.54 = 258.59 : x
  2. Step 2: Convert to fraction form
    344.10/474.54 = 258.59/x
  3. Step 3: Cross multiply
    344.10x = 474.54 × 258.59
  4. Step 4: Simplify right side
    344.10x = 122,707.63
  5. Step 5: Solve for x
    x = 122,707.63/344.10
  6. Step 6: Final answer
    x = 356.61

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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.