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Finding the Fourth Proportional to 427.17, 589.59 and 259.20

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Solution

The fourth proportional to 427.17, 589.59 and 259.20 is: 357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.17 : 589.59 = 259.20 : x
  2. Step 2: Convert to fraction form
    427.17/589.59 = 259.20/x
  3. Step 3: Cross multiply
    427.17x = 589.59 × 259.20
  4. Step 4: Simplify right side
    427.17x = 152,821.73
  5. Step 5: Solve for x
    x = 152,821.73/427.17
  6. Step 6: Final answer
    x = 357.75

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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.