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Finding the Fourth Proportional to 504.41, 755.61 and 388.45

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Solution

The fourth proportional to 504.41, 755.61 and 388.45 is: 581.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.41 : 755.61 = 388.45 : x
  2. Step 2: Convert to fraction form
    504.41/755.61 = 388.45/x
  3. Step 3: Cross multiply
    504.41x = 755.61 × 388.45
  4. Step 4: Simplify right side
    504.41x = 293,518.38
  5. Step 5: Solve for x
    x = 293,518.38/504.41
  6. Step 6: Final answer
    x = 581.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.