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Finding the Fourth Proportional to 1,482.76, 2,223.95 and 442.48

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Solution

The fourth proportional to 1,482.76, 2,223.95 and 442.48 is: 663.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.76 : 2,223.95 = 442.48 : x
  2. Step 2: Convert to fraction form
    1,482.76/2,223.95 = 442.48/x
  3. Step 3: Cross multiply
    1,482.76x = 2,223.95 × 442.48
  4. Step 4: Simplify right side
    1,482.76x = 984,059.48
  5. Step 5: Solve for x
    x = 984,059.48/1,482.76
  6. Step 6: Final answer
    x = 663.67

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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.