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Finding the Fourth Proportional to 374.44, 558.59 and 339.61

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Solution

The fourth proportional to 374.44, 558.59 and 339.61 is: 506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.44 : 558.59 = 339.61 : x
  2. Step 2: Convert to fraction form
    374.44/558.59 = 339.61/x
  3. Step 3: Cross multiply
    374.44x = 558.59 × 339.61
  4. Step 4: Simplify right side
    374.44x = 189,702.75
  5. Step 5: Solve for x
    x = 189,702.75/374.44
  6. Step 6: Final answer
    x = 506.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.