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Finding the Fourth Proportional to 880.44, 1,216.20 and 656.88

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Solution

The fourth proportional to 880.44, 1,216.20 and 656.88 is: 907.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.44 : 1,216.20 = 656.88 : x
  2. Step 2: Convert to fraction form
    880.44/1,216.20 = 656.88/x
  3. Step 3: Cross multiply
    880.44x = 1,216.20 × 656.88
  4. Step 4: Simplify right side
    880.44x = 798,897.46
  5. Step 5: Solve for x
    x = 798,897.46/880.44
  6. Step 6: Final answer
    x = 907.38

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.