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Finding the Fourth Proportional to 633.94, 948.40 and 480.31

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Solution

The fourth proportional to 633.94, 948.40 and 480.31 is: 718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.94 : 948.40 = 480.31 : x
  2. Step 2: Convert to fraction form
    633.94/948.40 = 480.31/x
  3. Step 3: Cross multiply
    633.94x = 948.40 × 480.31
  4. Step 4: Simplify right side
    633.94x = 455,526.00
  5. Step 5: Solve for x
    x = 455,526.00/633.94
  6. Step 6: Final answer
    x = 718.56

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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.