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Finding the Fourth Proportional to 315.98, 476.27 and 298.34

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Solution

The fourth proportional to 315.98, 476.27 and 298.34 is: 449.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.98 : 476.27 = 298.34 : x
  2. Step 2: Convert to fraction form
    315.98/476.27 = 298.34/x
  3. Step 3: Cross multiply
    315.98x = 476.27 × 298.34
  4. Step 4: Simplify right side
    315.98x = 142,090.39
  5. Step 5: Solve for x
    x = 142,090.39/315.98
  6. Step 6: Final answer
    x = 449.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.