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Finding the Fourth Proportional to 804.18, 1,107.54 and 693.62

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Solution

The fourth proportional to 804.18, 1,107.54 and 693.62 is: 955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.18 : 1,107.54 = 693.62 : x
  2. Step 2: Convert to fraction form
    804.18/1,107.54 = 693.62/x
  3. Step 3: Cross multiply
    804.18x = 1,107.54 × 693.62
  4. Step 4: Simplify right side
    804.18x = 768,206.36
  5. Step 5: Solve for x
    x = 768,206.36/804.18
  6. Step 6: Final answer
    x = 955.27

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.