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Finding the Fourth Proportional to 645.24, 968.51 and 402.37

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Solution

The fourth proportional to 645.24, 968.51 and 402.37 is: 603.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.24 : 968.51 = 402.37 : x
  2. Step 2: Convert to fraction form
    645.24/968.51 = 402.37/x
  3. Step 3: Cross multiply
    645.24x = 968.51 × 402.37
  4. Step 4: Simplify right side
    645.24x = 389,699.37
  5. Step 5: Solve for x
    x = 389,699.37/645.24
  6. Step 6: Final answer
    x = 603.96

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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.