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Finding the Fourth Proportional to 1,366.92, 2,050.64 and 442.40

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Solution

The fourth proportional to 1,366.92, 2,050.64 and 442.40 is: 663.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.92 : 2,050.64 = 442.40 : x
  2. Step 2: Convert to fraction form
    1,366.92/2,050.64 = 442.40/x
  3. Step 3: Cross multiply
    1,366.92x = 2,050.64 × 442.40
  4. Step 4: Simplify right side
    1,366.92x = 907,190.67
  5. Step 5: Solve for x
    x = 907,190.67/1,366.92
  6. Step 6: Final answer
    x = 663.68

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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.