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Finding the Fourth Proportional to 471.79, 707.53 and 197.83

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Solution

The fourth proportional to 471.79, 707.53 and 197.83 is: 296.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.79 : 707.53 = 197.83 : x
  2. Step 2: Convert to fraction form
    471.79/707.53 = 197.83/x
  3. Step 3: Cross multiply
    471.79x = 707.53 × 197.83
  4. Step 4: Simplify right side
    471.79x = 139,970.66
  5. Step 5: Solve for x
    x = 139,970.66/471.79
  6. Step 6: Final answer
    x = 296.68

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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.