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Finding the Fourth Proportional to 295.32, 407.70 and 225.48

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Solution

The fourth proportional to 295.32, 407.70 and 225.48 is: 311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.32 : 407.70 = 225.48 : x
  2. Step 2: Convert to fraction form
    295.32/407.70 = 225.48/x
  3. Step 3: Cross multiply
    295.32x = 407.70 × 225.48
  4. Step 4: Simplify right side
    295.32x = 91,928.20
  5. Step 5: Solve for x
    x = 91,928.20/295.32
  6. Step 6: Final answer
    x = 311.28

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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.