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Finding the Fourth Proportional to 502.05, 752.73 and 258.45

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Solution

The fourth proportional to 502.05, 752.73 and 258.45 is: 387.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.05 : 752.73 = 258.45 : x
  2. Step 2: Convert to fraction form
    502.05/752.73 = 258.45/x
  3. Step 3: Cross multiply
    502.05x = 752.73 × 258.45
  4. Step 4: Simplify right side
    502.05x = 194,539.28
  5. Step 5: Solve for x
    x = 194,539.28/502.05
  6. Step 6: Final answer
    x = 387.49

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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.