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Finding the Fourth Proportional to 875.59, 1,208.22 and 482.59

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Solution

The fourth proportional to 875.59, 1,208.22 and 482.59 is: 665.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.59 : 1,208.22 = 482.59 : x
  2. Step 2: Convert to fraction form
    875.59/1,208.22 = 482.59/x
  3. Step 3: Cross multiply
    875.59x = 1,208.22 × 482.59
  4. Step 4: Simplify right side
    875.59x = 583,074.89
  5. Step 5: Solve for x
    x = 583,074.89/875.59
  6. Step 6: Final answer
    x = 665.92

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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.