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Finding the Fourth Proportional to 501.02, 691.55 and 351.73

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Solution

The fourth proportional to 501.02, 691.55 and 351.73 is: 485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.02 : 691.55 = 351.73 : x
  2. Step 2: Convert to fraction form
    501.02/691.55 = 351.73/x
  3. Step 3: Cross multiply
    501.02x = 691.55 × 351.73
  4. Step 4: Simplify right side
    501.02x = 243,238.88
  5. Step 5: Solve for x
    x = 243,238.88/501.02
  6. Step 6: Final answer
    x = 485.49

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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.