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Finding the Fourth Proportional to 474.44, 708.76 and 378.36

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Solution

The fourth proportional to 474.44, 708.76 and 378.36 is: 565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.44 : 708.76 = 378.36 : x
  2. Step 2: Convert to fraction form
    474.44/708.76 = 378.36/x
  3. Step 3: Cross multiply
    474.44x = 708.76 × 378.36
  4. Step 4: Simplify right side
    474.44x = 268,166.43
  5. Step 5: Solve for x
    x = 268,166.43/474.44
  6. Step 6: Final answer
    x = 565.23

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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.