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Finding the Fourth Proportional to 899.98, 1,349.16 and 626.20

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Solution

The fourth proportional to 899.98, 1,349.16 and 626.20 is: 938.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.98 : 1,349.16 = 626.20 : x
  2. Step 2: Convert to fraction form
    899.98/1,349.16 = 626.20/x
  3. Step 3: Cross multiply
    899.98x = 1,349.16 × 626.20
  4. Step 4: Simplify right side
    899.98x = 844,843.99
  5. Step 5: Solve for x
    x = 844,843.99/899.98
  6. Step 6: Final answer
    x = 938.74

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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.