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Finding the Fourth Proportional to 632.36, 948.65 and 285.82

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Solution

The fourth proportional to 632.36, 948.65 and 285.82 is: 428.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.36 : 948.65 = 285.82 : x
  2. Step 2: Convert to fraction form
    632.36/948.65 = 285.82/x
  3. Step 3: Cross multiply
    632.36x = 948.65 × 285.82
  4. Step 4: Simplify right side
    632.36x = 271,139.34
  5. Step 5: Solve for x
    x = 271,139.34/632.36
  6. Step 6: Final answer
    x = 428.77

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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.