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Finding the Fourth Proportional to 633.08, 948.56 and 438.18

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Solution

The fourth proportional to 633.08, 948.56 and 438.18 is: 656.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.08 : 948.56 = 438.18 : x
  2. Step 2: Convert to fraction form
    633.08/948.56 = 438.18/x
  3. Step 3: Cross multiply
    633.08x = 948.56 × 438.18
  4. Step 4: Simplify right side
    633.08x = 415,640.02
  5. Step 5: Solve for x
    x = 415,640.02/633.08
  6. Step 6: Final answer
    x = 656.54

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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.