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Finding the Fourth Proportional to 335.52, 505.80 and 313.23

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Solution

The fourth proportional to 335.52, 505.80 and 313.23 is: 472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.52 : 505.80 = 313.23 : x
  2. Step 2: Convert to fraction form
    335.52/505.80 = 313.23/x
  3. Step 3: Cross multiply
    335.52x = 505.80 × 313.23
  4. Step 4: Simplify right side
    335.52x = 158,431.73
  5. Step 5: Solve for x
    x = 158,431.73/335.52
  6. Step 6: Final answer
    x = 472.20

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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.