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Finding the Fourth Proportional to 1,097.63, 1,514.77 and 631.88

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Solution

The fourth proportional to 1,097.63, 1,514.77 and 631.88 is: 872.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.63 : 1,514.77 = 631.88 : x
  2. Step 2: Convert to fraction form
    1,097.63/1,514.77 = 631.88/x
  3. Step 3: Cross multiply
    1,097.63x = 1,514.77 × 631.88
  4. Step 4: Simplify right side
    1,097.63x = 957,143.71
  5. Step 5: Solve for x
    x = 957,143.71/1,097.63
  6. Step 6: Final answer
    x = 872.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.