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Finding the Fourth Proportional to 717.56, 1,075.52 and 351.54

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Solution

The fourth proportional to 717.56, 1,075.52 and 351.54 is: 526.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.56 : 1,075.52 = 351.54 : x
  2. Step 2: Convert to fraction form
    717.56/1,075.52 = 351.54/x
  3. Step 3: Cross multiply
    717.56x = 1,075.52 × 351.54
  4. Step 4: Simplify right side
    717.56x = 378,088.30
  5. Step 5: Solve for x
    x = 378,088.30/717.56
  6. Step 6: Final answer
    x = 526.91

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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.