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Finding the Fourth Proportional to 1,108.01, 1,668.06 and 957.35

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Solution

The fourth proportional to 1,108.01, 1,668.06 and 957.35 is: 1,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.01 : 1,668.06 = 957.35 : x
  2. Step 2: Convert to fraction form
    1,108.01/1,668.06 = 957.35/x
  3. Step 3: Cross multiply
    1,108.01x = 1,668.06 × 957.35
  4. Step 4: Simplify right side
    1,108.01x = 1,596,921.41
  5. Step 5: Solve for x
    x = 1,596,921.41/1,108.01
  6. Step 6: Final answer
    x = 1,441.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.