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Finding the Fourth Proportional to 379.14, 521.75 and 368.43

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Solution

The fourth proportional to 379.14, 521.75 and 368.43 is: 507.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.14 : 521.75 = 368.43 : x
  2. Step 2: Convert to fraction form
    379.14/521.75 = 368.43/x
  3. Step 3: Cross multiply
    379.14x = 521.75 × 368.43
  4. Step 4: Simplify right side
    379.14x = 192,226.51
  5. Step 5: Solve for x
    x = 192,226.51/379.14
  6. Step 6: Final answer
    x = 507.01

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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.