Home / 1,416.26-2,124.39-442.45

Finding the Fourth Proportional to 1,416.26, 2,124.39 and 442.45

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Solution

The fourth proportional to 1,416.26, 2,124.39 and 442.45 is: 663.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.26 : 2,124.39 = 442.45 : x
  2. Step 2: Convert to fraction form
    1,416.26/2,124.39 = 442.45/x
  3. Step 3: Cross multiply
    1,416.26x = 2,124.39 × 442.45
  4. Step 4: Simplify right side
    1,416.26x = 939,925.73
  5. Step 5: Solve for x
    x = 939,925.73/1,416.26
  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.