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Finding the Fourth Proportional to 632.40, 948.78 and 307.95

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Solution

The fourth proportional to 632.40, 948.78 and 307.95 is: 462.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.40 : 948.78 = 307.95 : x
  2. Step 2: Convert to fraction form
    632.40/948.78 = 307.95/x
  3. Step 3: Cross multiply
    632.40x = 948.78 × 307.95
  4. Step 4: Simplify right side
    632.40x = 292,176.80
  5. Step 5: Solve for x
    x = 292,176.80/632.40
  6. Step 6: Final answer
    x = 462.01

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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.