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Finding the Fourth Proportional to 899.92, 1,348.68 and 437.88

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Solution

The fourth proportional to 899.92, 1,348.68 and 437.88 is: 656.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.92 : 1,348.68 = 437.88 : x
  2. Step 2: Convert to fraction form
    899.92/1,348.68 = 437.88/x
  3. Step 3: Cross multiply
    899.92x = 1,348.68 × 437.88
  4. Step 4: Simplify right side
    899.92x = 590,560.00
  5. Step 5: Solve for x
    x = 590,560.00/899.92
  6. Step 6: Final answer
    x = 656.24

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.