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Finding the Fourth Proportional to 478.34, 717.51 and 234.73

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Solution

The fourth proportional to 478.34, 717.51 and 234.73 is: 352.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.34 : 717.51 = 234.73 : x
  2. Step 2: Convert to fraction form
    478.34/717.51 = 234.73/x
  3. Step 3: Cross multiply
    478.34x = 717.51 × 234.73
  4. Step 4: Simplify right side
    478.34x = 168,421.58
  5. Step 5: Solve for x
    x = 168,421.58/478.34
  6. Step 6: Final answer
    x = 352.10

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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.