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Finding the Fourth Proportional to 380.17, 524.43 and 269.45

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Solution

The fourth proportional to 380.17, 524.43 and 269.45 is: 371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.17 : 524.43 = 269.45 : x
  2. Step 2: Convert to fraction form
    380.17/524.43 = 269.45/x
  3. Step 3: Cross multiply
    380.17x = 524.43 × 269.45
  4. Step 4: Simplify right side
    380.17x = 141,309.99
  5. Step 5: Solve for x
    x = 141,309.99/380.17
  6. Step 6: Final answer
    x = 371.70

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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.