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Finding the Fourth Proportional to 581.28, 875.84 and 480.82

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Solution

The fourth proportional to 581.28, 875.84 and 480.82 is: 724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.28 : 875.84 = 480.82 : x
  2. Step 2: Convert to fraction form
    581.28/875.84 = 480.82/x
  3. Step 3: Cross multiply
    581.28x = 875.84 × 480.82
  4. Step 4: Simplify right side
    581.28x = 421,121.39
  5. Step 5: Solve for x
    x = 421,121.39/581.28
  6. Step 6: Final answer
    x = 724.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.