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Finding the Fourth Proportional to 314.37, 434.07 and 216.36

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Solution

The fourth proportional to 314.37, 434.07 and 216.36 is: 298.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.37 : 434.07 = 216.36 : x
  2. Step 2: Convert to fraction form
    314.37/434.07 = 216.36/x
  3. Step 3: Cross multiply
    314.37x = 434.07 × 216.36
  4. Step 4: Simplify right side
    314.37x = 93,915.39
  5. Step 5: Solve for x
    x = 93,915.39/314.37
  6. Step 6: Final answer
    x = 298.74

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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.