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Finding the Fourth Proportional to 1,088.17, 1,630.71 and 957.85

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Solution

The fourth proportional to 1,088.17, 1,630.71 and 957.85 is: 1,435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.17 : 1,630.71 = 957.85 : x
  2. Step 2: Convert to fraction form
    1,088.17/1,630.71 = 957.85/x
  3. Step 3: Cross multiply
    1,088.17x = 1,630.71 × 957.85
  4. Step 4: Simplify right side
    1,088.17x = 1,561,975.57
  5. Step 5: Solve for x
    x = 1,561,975.57/1,088.17
  6. Step 6: Final answer
    x = 1,435.42

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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.