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Finding the Fourth Proportional to 1,136.07, 1,704.51 and 519.93

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Solution

The fourth proportional to 1,136.07, 1,704.51 and 519.93 is: 780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.07 : 1,704.51 = 519.93 : x
  2. Step 2: Convert to fraction form
    1,136.07/1,704.51 = 519.93/x
  3. Step 3: Cross multiply
    1,136.07x = 1,704.51 × 519.93
  4. Step 4: Simplify right side
    1,136.07x = 886,225.88
  5. Step 5: Solve for x
    x = 886,225.88/1,136.07
  6. Step 6: Final answer
    x = 780.08

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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.