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Finding the Fourth Proportional to 633.45, 872.87 and 467.40

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Solution

The fourth proportional to 633.45, 872.87 and 467.40 is: 644.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.45 : 872.87 = 467.40 : x
  2. Step 2: Convert to fraction form
    633.45/872.87 = 467.40/x
  3. Step 3: Cross multiply
    633.45x = 872.87 × 467.40
  4. Step 4: Simplify right side
    633.45x = 407,977.10
  5. Step 5: Solve for x
    x = 407,977.10/633.45
  6. Step 6: Final answer
    x = 644.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.