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Finding the Fourth Proportional to 633.50, 948.78 and 372.98

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Solution

The fourth proportional to 633.50, 948.78 and 372.98 is: 558.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.50 : 948.78 = 372.98 : x
  2. Step 2: Convert to fraction form
    633.50/948.78 = 372.98/x
  3. Step 3: Cross multiply
    633.50x = 948.78 × 372.98
  4. Step 4: Simplify right side
    633.50x = 353,878.34
  5. Step 5: Solve for x
    x = 353,878.34/633.50
  6. Step 6: Final answer
    x = 558.61

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1.5x scale

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.