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Finding the Fourth Proportional to 562, 843.32 and 258

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Solution

The fourth proportional to 562, 843.32 and 258 is: 387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    562 : 843.32 = 258 : x
  2. Step 2: Convert to fraction form
    562/843.32 = 258/x
  3. Step 3: Cross multiply
    562x = 843.32 × 258
  4. Step 4: Simplify right side
    562x = 217,576.56
  5. Step 5: Solve for x
    x = 217,576.56/562
  6. Step 6: Final answer
    x = 387.15

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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.