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Finding the Fourth Proportional to 624.63, 861.89 and 362.64

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Solution

The fourth proportional to 624.63, 861.89 and 362.64 is: 500.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.63 : 861.89 = 362.64 : x
  2. Step 2: Convert to fraction form
    624.63/861.89 = 362.64/x
  3. Step 3: Cross multiply
    624.63x = 861.89 × 362.64
  4. Step 4: Simplify right side
    624.63x = 312,553.98
  5. Step 5: Solve for x
    x = 312,553.98/624.63
  6. Step 6: Final answer
    x = 500.38

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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.