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Finding the Fourth Proportional to 2,276.47, 3,415.61 and 716.71

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Solution

The fourth proportional to 2,276.47, 3,415.61 and 716.71 is: 1,075.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.47 : 3,415.61 = 716.71 : x
  2. Step 2: Convert to fraction form
    2,276.47/3,415.61 = 716.71/x
  3. Step 3: Cross multiply
    2,276.47x = 3,415.61 × 716.71
  4. Step 4: Simplify right side
    2,276.47x = 2,448,001.84
  5. Step 5: Solve for x
    x = 2,448,001.84/2,276.47
  6. Step 6: Final answer
    x = 1,075.35

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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.