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Finding the Fourth Proportional to 388.11, 535.04 and 294.51

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Solution

The fourth proportional to 388.11, 535.04 and 294.51 is: 406.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.11 : 535.04 = 294.51 : x
  2. Step 2: Convert to fraction form
    388.11/535.04 = 294.51/x
  3. Step 3: Cross multiply
    388.11x = 535.04 × 294.51
  4. Step 4: Simplify right side
    388.11x = 157,573.16
  5. Step 5: Solve for x
    x = 157,573.16/388.11
  6. Step 6: Final answer
    x = 406.00

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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.