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Finding the Fourth Proportional to 1,302.02, 1,796.77 and 712.55

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Solution

The fourth proportional to 1,302.02, 1,796.77 and 712.55 is: 983.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.02 : 1,796.77 = 712.55 : x
  2. Step 2: Convert to fraction form
    1,302.02/1,796.77 = 712.55/x
  3. Step 3: Cross multiply
    1,302.02x = 1,796.77 × 712.55
  4. Step 4: Simplify right side
    1,302.02x = 1,280,283.74
  5. Step 5: Solve for x
    x = 1,280,283.74/1,302.02
  6. Step 6: Final answer
    x = 983.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.