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Finding the Fourth Proportional to 295.50, 407.80 and 185

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Solution

The fourth proportional to 295.50, 407.80 and 185 is: 255.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.50 : 407.80 = 185 : x
  2. Step 2: Convert to fraction form
    295.50/407.80 = 185/x
  3. Step 3: Cross multiply
    295.50x = 407.80 × 185
  4. Step 4: Simplify right side
    295.50x = 75,443
  5. Step 5: Solve for x
    x = 75,443/295.50
  6. Step 6: Final answer
    x = 255.31

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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.