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Finding the Fourth Proportional to 717.84, 1,075.74 and 552.68

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Solution

The fourth proportional to 717.84, 1,075.74 and 552.68 is: 828.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.84 : 1,075.74 = 552.68 : x
  2. Step 2: Convert to fraction form
    717.84/1,075.74 = 552.68/x
  3. Step 3: Cross multiply
    717.84x = 1,075.74 × 552.68
  4. Step 4: Simplify right side
    717.84x = 594,539.98
  5. Step 5: Solve for x
    x = 594,539.98/717.84
  6. Step 6: Final answer
    x = 828.23

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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.