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Finding the Fourth Proportional to 473.08, 709.44 and 289.91

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Solution

The fourth proportional to 473.08, 709.44 and 289.91 is: 434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.08 : 709.44 = 289.91 : x
  2. Step 2: Convert to fraction form
    473.08/709.44 = 289.91/x
  3. Step 3: Cross multiply
    473.08x = 709.44 × 289.91
  4. Step 4: Simplify right side
    473.08x = 205,676.25
  5. Step 5: Solve for x
    x = 205,676.25/473.08
  6. Step 6: Final answer
    x = 434.76

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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.