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Finding the Fourth Proportional to 875.73, 1,208.52 and 543.99

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Solution

The fourth proportional to 875.73, 1,208.52 and 543.99 is: 750.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.73 : 1,208.52 = 543.99 : x
  2. Step 2: Convert to fraction form
    875.73/1,208.52 = 543.99/x
  3. Step 3: Cross multiply
    875.73x = 1,208.52 × 543.99
  4. Step 4: Simplify right side
    875.73x = 657,422.79
  5. Step 5: Solve for x
    x = 657,422.79/875.73
  6. Step 6: Final answer
    x = 750.71

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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.