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Finding the Fourth Proportional to 388.08, 536.04 and 272.16

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Solution

The fourth proportional to 388.08, 536.04 and 272.16 is: 375.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.08 : 536.04 = 272.16 : x
  2. Step 2: Convert to fraction form
    388.08/536.04 = 272.16/x
  3. Step 3: Cross multiply
    388.08x = 536.04 × 272.16
  4. Step 4: Simplify right side
    388.08x = 145,888.65
  5. Step 5: Solve for x
    x = 145,888.65/388.08
  6. Step 6: Final answer
    x = 375.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.