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Finding the Fourth Proportional to 632.22, 948.30 and 401.55

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Solution

The fourth proportional to 632.22, 948.30 and 401.55 is: 602.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.22 : 948.30 = 401.55 : x
  2. Step 2: Convert to fraction form
    632.22/948.30 = 401.55/x
  3. Step 3: Cross multiply
    632.22x = 948.30 × 401.55
  4. Step 4: Simplify right side
    632.22x = 380,789.87
  5. Step 5: Solve for x
    x = 380,789.87/632.22
  6. Step 6: Final answer
    x = 602.31

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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.