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Finding the Fourth Proportional to 500.35, 750.46 and 211.75

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Solution

The fourth proportional to 500.35, 750.46 and 211.75 is: 317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.35 : 750.46 = 211.75 : x
  2. Step 2: Convert to fraction form
    500.35/750.46 = 211.75/x
  3. Step 3: Cross multiply
    500.35x = 750.46 × 211.75
  4. Step 4: Simplify right side
    500.35x = 158,909.91
  5. Step 5: Solve for x
    x = 158,909.91/500.35
  6. Step 6: Final answer
    x = 317.60

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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.