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Finding the Fourth Proportional to 314.58, 433.94 and 202.53

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Solution

The fourth proportional to 314.58, 433.94 and 202.53 is: 279.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.58 : 433.94 = 202.53 : x
  2. Step 2: Convert to fraction form
    314.58/433.94 = 202.53/x
  3. Step 3: Cross multiply
    314.58x = 433.94 × 202.53
  4. Step 4: Simplify right side
    314.58x = 87,885.87
  5. Step 5: Solve for x
    x = 87,885.87/314.58
  6. Step 6: Final answer
    x = 279.38

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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.