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Finding the Fourth Proportional to 1,654.07, 2,480.81 and 543.47

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Solution

The fourth proportional to 1,654.07, 2,480.81 and 543.47 is: 815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.07 : 2,480.81 = 543.47 : x
  2. Step 2: Convert to fraction form
    1,654.07/2,480.81 = 543.47/x
  3. Step 3: Cross multiply
    1,654.07x = 2,480.81 × 543.47
  4. Step 4: Simplify right side
    1,654.07x = 1,348,230.69
  5. Step 5: Solve for x
    x = 1,348,230.69/1,654.07
  6. Step 6: Final answer
    x = 815.10

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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.