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Finding the Fourth Proportional to 779.04, 1,169.08 and 716.47

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Solution

The fourth proportional to 779.04, 1,169.08 and 716.47 is: 1,075.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    779.04 : 1,169.08 = 716.47 : x
  2. Step 2: Convert to fraction form
    779.04/1,169.08 = 716.47/x
  3. Step 3: Cross multiply
    779.04x = 1,169.08 × 716.47
  4. Step 4: Simplify right side
    779.04x = 837,606.03
  5. Step 5: Solve for x
    x = 837,606.03/779.04
  6. Step 6: Final answer
    x = 1,075.18

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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.