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Finding the Fourth Proportional to 345.93, 517.62 and 243.48

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Solution

The fourth proportional to 345.93, 517.62 and 243.48 is: 364.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.93 : 517.62 = 243.48 : x
  2. Step 2: Convert to fraction form
    345.93/517.62 = 243.48/x
  3. Step 3: Cross multiply
    345.93x = 517.62 × 243.48
  4. Step 4: Simplify right side
    345.93x = 126,030.12
  5. Step 5: Solve for x
    x = 126,030.12/345.93
  6. Step 6: Final answer
    x = 364.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.