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Finding the Fourth Proportional to 532.88, 799.12 and 258.88

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Solution

The fourth proportional to 532.88, 799.12 and 258.88 is: 388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.88 : 799.12 = 258.88 : x
  2. Step 2: Convert to fraction form
    532.88/799.12 = 258.88/x
  3. Step 3: Cross multiply
    532.88x = 799.12 × 258.88
  4. Step 4: Simplify right side
    532.88x = 206,876.19
  5. Step 5: Solve for x
    x = 206,876.19/532.88
  6. Step 6: Final answer
    x = 388.22

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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.