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Finding the Fourth Proportional to 645.87, 973.67 and 604.11

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Solution

The fourth proportional to 645.87, 973.67 and 604.11 is: 910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.87 : 973.67 = 604.11 : x
  2. Step 2: Convert to fraction form
    645.87/973.67 = 604.11/x
  3. Step 3: Cross multiply
    645.87x = 973.67 × 604.11
  4. Step 4: Simplify right side
    645.87x = 588,205.29
  5. Step 5: Solve for x
    x = 588,205.29/645.87
  6. Step 6: Final answer
    x = 910.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.