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Finding the Fourth Proportional to 350.51, 521.70 and 340.79

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Solution

The fourth proportional to 350.51, 521.70 and 340.79 is: 507.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.51 : 521.70 = 340.79 : x
  2. Step 2: Convert to fraction form
    350.51/521.70 = 340.79/x
  3. Step 3: Cross multiply
    350.51x = 521.70 × 340.79
  4. Step 4: Simplify right side
    350.51x = 177,786.26
  5. Step 5: Solve for x
    x = 177,786.26/350.51
  6. Step 6: Final answer
    x = 507.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.