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Finding the Fourth Proportional to 386.16, 533.16 and 334.68

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Solution

The fourth proportional to 386.16, 533.16 and 334.68 is: 462.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.16 : 533.16 = 334.68 : x
  2. Step 2: Convert to fraction form
    386.16/533.16 = 334.68/x
  3. Step 3: Cross multiply
    386.16x = 533.16 × 334.68
  4. Step 4: Simplify right side
    386.16x = 178,437.99
  5. Step 5: Solve for x
    x = 178,437.99/386.16
  6. Step 6: Final answer
    x = 462.08

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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.