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Finding the Fourth Proportional to 632.42, 948.50 and 398.05

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Solution

The fourth proportional to 632.42, 948.50 and 398.05 is: 596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.42 : 948.50 = 398.05 : x
  2. Step 2: Convert to fraction form
    632.42/948.50 = 398.05/x
  3. Step 3: Cross multiply
    632.42x = 948.50 × 398.05
  4. Step 4: Simplify right side
    632.42x = 377,547.56
  5. Step 5: Solve for x
    x = 377,547.56/632.42
  6. Step 6: Final answer
    x = 596.99

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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.