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Finding the Fourth Proportional to 357.10, 534.64 and 202.75

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Solution

The fourth proportional to 357.10, 534.64 and 202.75 is: 303.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.10 : 534.64 = 202.75 : x
  2. Step 2: Convert to fraction form
    357.10/534.64 = 202.75/x
  3. Step 3: Cross multiply
    357.10x = 534.64 × 202.75
  4. Step 4: Simplify right side
    357.10x = 108,398.26
  5. Step 5: Solve for x
    x = 108,398.26/357.10
  6. Step 6: Final answer
    x = 303.55

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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.