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Finding the Fourth Proportional to 272.58, 407.64 and 204.16

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Solution

The fourth proportional to 272.58, 407.64 and 204.16 is: 305.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.58 : 407.64 = 204.16 : x
  2. Step 2: Convert to fraction form
    272.58/407.64 = 204.16/x
  3. Step 3: Cross multiply
    272.58x = 407.64 × 204.16
  4. Step 4: Simplify right side
    272.58x = 83,223.78
  5. Step 5: Solve for x
    x = 83,223.78/272.58
  6. Step 6: Final answer
    x = 305.32

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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.