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Finding the Fourth Proportional to 388.40, 536.04 and 333.32

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Solution

The fourth proportional to 388.40, 536.04 and 333.32 is: 460.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.40 : 536.04 = 333.32 : x
  2. Step 2: Convert to fraction form
    388.40/536.04 = 333.32/x
  3. Step 3: Cross multiply
    388.40x = 536.04 × 333.32
  4. Step 4: Simplify right side
    388.40x = 178,670.17
  5. Step 5: Solve for x
    x = 178,670.17/388.40
  6. Step 6: Final answer
    x = 460.02

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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.