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Finding the Fourth Proportional to 353.98, 533.05 and 308.87

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Solution

The fourth proportional to 353.98, 533.05 and 308.87 is: 465.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.98 : 533.05 = 308.87 : x
  2. Step 2: Convert to fraction form
    353.98/533.05 = 308.87/x
  3. Step 3: Cross multiply
    353.98x = 533.05 × 308.87
  4. Step 4: Simplify right side
    353.98x = 164,643.15
  5. Step 5: Solve for x
    x = 164,643.15/353.98
  6. Step 6: Final answer
    x = 465.12

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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.