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Finding the Fourth Proportional to 1,097.88, 1,515.14 and 632.13

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Solution

The fourth proportional to 1,097.88, 1,515.14 and 632.13 is: 872.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.88 : 1,515.14 = 632.13 : x
  2. Step 2: Convert to fraction form
    1,097.88/1,515.14 = 632.13/x
  3. Step 3: Cross multiply
    1,097.88x = 1,515.14 × 632.13
  4. Step 4: Simplify right side
    1,097.88x = 957,765.45
  5. Step 5: Solve for x
    x = 957,765.45/1,097.88
  6. Step 6: Final answer
    x = 872.38

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Double scale
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1.5x scale

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.