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Finding the Fourth Proportional to 362.21, 503.21 and 357.89

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Solution

The fourth proportional to 362.21, 503.21 and 357.89 is: 497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.21 : 503.21 = 357.89 : x
  2. Step 2: Convert to fraction form
    362.21/503.21 = 357.89/x
  3. Step 3: Cross multiply
    362.21x = 503.21 × 357.89
  4. Step 4: Simplify right side
    362.21x = 180,089.52
  5. Step 5: Solve for x
    x = 180,089.52/362.21
  6. Step 6: Final answer
    x = 497.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.