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Finding the Fourth Proportional to 473.75, 710.67 and 131.75

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Solution

The fourth proportional to 473.75, 710.67 and 131.75 is: 197.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.75 : 710.67 = 131.75 : x
  2. Step 2: Convert to fraction form
    473.75/710.67 = 131.75/x
  3. Step 3: Cross multiply
    473.75x = 710.67 × 131.75
  4. Step 4: Simplify right side
    473.75x = 93,630.77
  5. Step 5: Solve for x
    x = 93,630.77/473.75
  6. Step 6: Final answer
    x = 197.64

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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.