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Finding the Fourth Proportional to 841.02, 1,260.78 and 450.72

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Solution

The fourth proportional to 841.02, 1,260.78 and 450.72 is: 675.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.02 : 1,260.78 = 450.72 : x
  2. Step 2: Convert to fraction form
    841.02/1,260.78 = 450.72/x
  3. Step 3: Cross multiply
    841.02x = 1,260.78 × 450.72
  4. Step 4: Simplify right side
    841.02x = 568,258.76
  5. Step 5: Solve for x
    x = 568,258.76/841.02
  6. Step 6: Final answer
    x = 675.68

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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.