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Finding the Fourth Proportional to 633.06, 869.09 and 555.30

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Solution

The fourth proportional to 633.06, 869.09 and 555.30 is: 762.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.06 : 869.09 = 555.30 : x
  2. Step 2: Convert to fraction form
    633.06/869.09 = 555.30/x
  3. Step 3: Cross multiply
    633.06x = 869.09 × 555.30
  4. Step 4: Simplify right side
    633.06x = 482,602.90
  5. Step 5: Solve for x
    x = 482,602.90/633.06
  6. Step 6: Final answer
    x = 762.33

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.