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Finding the Fourth Proportional to 632.98, 948.40 and 449.46

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Solution

The fourth proportional to 632.98, 948.40 and 449.46 is: 673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.98 : 948.40 = 449.46 : x
  2. Step 2: Convert to fraction form
    632.98/948.40 = 449.46/x
  3. Step 3: Cross multiply
    632.98x = 948.40 × 449.46
  4. Step 4: Simplify right side
    632.98x = 426,271.05
  5. Step 5: Solve for x
    x = 426,271.05/632.98
  6. Step 6: Final answer
    x = 673.44

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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.