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Finding the Fourth Proportional to 562.04, 775.50 and 355

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Solution

The fourth proportional to 562.04, 775.50 and 355 is: 489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.04 : 775.50 = 355 : x
  2. Step 2: Convert to fraction form
    562.04/775.50 = 355/x
  3. Step 3: Cross multiply
    562.04x = 775.50 × 355
  4. Step 4: Simplify right side
    562.04x = 275,302.50
  5. Step 5: Solve for x
    x = 275,302.50/562.04
  6. Step 6: Final answer
    x = 489.83

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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.