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Finding the Fourth Proportional to 469.47, 648.08 and 272.94

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Solution

The fourth proportional to 469.47, 648.08 and 272.94 is: 376.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.47 : 648.08 = 272.94 : x
  2. Step 2: Convert to fraction form
    469.47/648.08 = 272.94/x
  3. Step 3: Cross multiply
    469.47x = 648.08 × 272.94
  4. Step 4: Simplify right side
    469.47x = 176,885.59
  5. Step 5: Solve for x
    x = 176,885.59/469.47
  6. Step 6: Final answer
    x = 376.78

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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.