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Finding the Fourth Proportional to 314.56, 433.94 and 216.16

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Solution

The fourth proportional to 314.56, 433.94 and 216.16 is: 298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.56 : 433.94 = 216.16 : x
  2. Step 2: Convert to fraction form
    314.56/433.94 = 216.16/x
  3. Step 3: Cross multiply
    314.56x = 433.94 × 216.16
  4. Step 4: Simplify right side
    314.56x = 93,800.47
  5. Step 5: Solve for x
    x = 93,800.47/314.56
  6. Step 6: Final answer
    x = 298.20

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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.