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Finding the Fourth Proportional to 562.62, 776.55 and 355.50

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Solution

The fourth proportional to 562.62, 776.55 and 355.50 is: 490.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.62 : 776.55 = 355.50 : x
  2. Step 2: Convert to fraction form
    562.62/776.55 = 355.50/x
  3. Step 3: Cross multiply
    562.62x = 776.55 × 355.50
  4. Step 4: Simplify right side
    562.62x = 276,063.53
  5. Step 5: Solve for x
    x = 276,063.53/562.62
  6. Step 6: Final answer
    x = 490.67

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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.