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Finding the Fourth Proportional to 885.33, 1,222.91 and 674.24

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Solution

The fourth proportional to 885.33, 1,222.91 and 674.24 is: 931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.33 : 1,222.91 = 674.24 : x
  2. Step 2: Convert to fraction form
    885.33/1,222.91 = 674.24/x
  3. Step 3: Cross multiply
    885.33x = 1,222.91 × 674.24
  4. Step 4: Simplify right side
    885.33x = 824,525.35
  5. Step 5: Solve for x
    x = 824,525.35/885.33
  6. Step 6: Final answer
    x = 931.32

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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.