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Finding the Fourth Proportional to 632.30, 947.94 and 285.46

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Solution

The fourth proportional to 632.30, 947.94 and 285.46 is: 427.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.30 : 947.94 = 285.46 : x
  2. Step 2: Convert to fraction form
    632.30/947.94 = 285.46/x
  3. Step 3: Cross multiply
    632.30x = 947.94 × 285.46
  4. Step 4: Simplify right side
    632.30x = 270,598.95
  5. Step 5: Solve for x
    x = 270,598.95/632.30
  6. Step 6: Final answer
    x = 427.96

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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.