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Finding the Fourth Proportional to 393.32, 591.06 and 369.56

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Solution

The fourth proportional to 393.32, 591.06 and 369.56 is: 555.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.32 : 591.06 = 369.56 : x
  2. Step 2: Convert to fraction form
    393.32/591.06 = 369.56/x
  3. Step 3: Cross multiply
    393.32x = 591.06 × 369.56
  4. Step 4: Simplify right side
    393.32x = 218,432.13
  5. Step 5: Solve for x
    x = 218,432.13/393.32
  6. Step 6: Final answer
    x = 555.35

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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.