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Finding the Fourth Proportional to 1,034.45, 1,551.72 and 514.70

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Solution

The fourth proportional to 1,034.45, 1,551.72 and 514.70 is: 772.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.45 : 1,551.72 = 514.70 : x
  2. Step 2: Convert to fraction form
    1,034.45/1,551.72 = 514.70/x
  3. Step 3: Cross multiply
    1,034.45x = 1,551.72 × 514.70
  4. Step 4: Simplify right side
    1,034.45x = 798,670.28
  5. Step 5: Solve for x
    x = 798,670.28/1,034.45
  6. Step 6: Final answer
    x = 772.07

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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.