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Finding the Fourth Proportional to 841.61, 1,256.92 and 704.77

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Solution

The fourth proportional to 841.61, 1,256.92 and 704.77 is: 1,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.61 : 1,256.92 = 704.77 : x
  2. Step 2: Convert to fraction form
    841.61/1,256.92 = 704.77/x
  3. Step 3: Cross multiply
    841.61x = 1,256.92 × 704.77
  4. Step 4: Simplify right side
    841.61x = 885,834.60
  5. Step 5: Solve for x
    x = 885,834.60/841.61
  6. Step 6: Final answer
    x = 1,052.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.