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Finding the Fourth Proportional to 632.19, 872.10 and 404.66

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Solution

The fourth proportional to 632.19, 872.10 and 404.66 is: 558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.19 : 872.10 = 404.66 : x
  2. Step 2: Convert to fraction form
    632.19/872.10 = 404.66/x
  3. Step 3: Cross multiply
    632.19x = 872.10 × 404.66
  4. Step 4: Simplify right side
    632.19x = 352,903.99
  5. Step 5: Solve for x
    x = 352,903.99/632.19
  6. Step 6: Final answer
    x = 558.22

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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.