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Finding the Fourth Proportional to 353.34, 483.53 and 345.78

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Solution

The fourth proportional to 353.34, 483.53 and 345.78 is: 473.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.34 : 483.53 = 345.78 : x
  2. Step 2: Convert to fraction form
    353.34/483.53 = 345.78/x
  3. Step 3: Cross multiply
    353.34x = 483.53 × 345.78
  4. Step 4: Simplify right side
    353.34x = 167,193.27
  5. Step 5: Solve for x
    x = 167,193.27/353.34
  6. Step 6: Final answer
    x = 473.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.