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Finding the Fourth Proportional to 393.37, 587.04 and 384.12

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Solution

The fourth proportional to 393.37, 587.04 and 384.12 is: 573.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.37 : 587.04 = 384.12 : x
  2. Step 2: Convert to fraction form
    393.37/587.04 = 384.12/x
  3. Step 3: Cross multiply
    393.37x = 587.04 × 384.12
  4. Step 4: Simplify right side
    393.37x = 225,492.36
  5. Step 5: Solve for x
    x = 225,492.36/393.37
  6. Step 6: Final answer
    x = 573.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.