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Finding the Fourth Proportional to 1,011.76, 1,516.06 and 704.21

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Solution

The fourth proportional to 1,011.76, 1,516.06 and 704.21 is: 1,055.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.76 : 1,516.06 = 704.21 : x
  2. Step 2: Convert to fraction form
    1,011.76/1,516.06 = 704.21/x
  3. Step 3: Cross multiply
    1,011.76x = 1,516.06 × 704.21
  4. Step 4: Simplify right side
    1,011.76x = 1,067,624.61
  5. Step 5: Solve for x
    x = 1,067,624.61/1,011.76
  6. Step 6: Final answer
    x = 1,055.22

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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.