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Finding the Fourth Proportional to 342.93, 473.19 and 218.70

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Solution

The fourth proportional to 342.93, 473.19 and 218.70 is: 301.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.93 : 473.19 = 218.70 : x
  2. Step 2: Convert to fraction form
    342.93/473.19 = 218.70/x
  3. Step 3: Cross multiply
    342.93x = 473.19 × 218.70
  4. Step 4: Simplify right side
    342.93x = 103,484.88
  5. Step 5: Solve for x
    x = 103,484.88/342.93
  6. Step 6: Final answer
    x = 301.77

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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.