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Finding the Fourth Proportional to 635.72, 957.33 and 555.53

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Solution

The fourth proportional to 635.72, 957.33 and 555.53 is: 836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.72 : 957.33 = 555.53 : x
  2. Step 2: Convert to fraction form
    635.72/957.33 = 555.53/x
  3. Step 3: Cross multiply
    635.72x = 957.33 × 555.53
  4. Step 4: Simplify right side
    635.72x = 531,820.75
  5. Step 5: Solve for x
    x = 531,820.75/635.72
  6. Step 6: Final answer
    x = 836.57

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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.