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Finding the Fourth Proportional to 633.81, 951.30 and 619.86

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Solution

The fourth proportional to 633.81, 951.30 and 619.86 is: 930.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.81 : 951.30 = 619.86 : x
  2. Step 2: Convert to fraction form
    633.81/951.30 = 619.86/x
  3. Step 3: Cross multiply
    633.81x = 951.30 × 619.86
  4. Step 4: Simplify right side
    633.81x = 589,672.82
  5. Step 5: Solve for x
    x = 589,672.82/633.81
  6. Step 6: Final answer
    x = 930.36

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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.