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Finding the Fourth Proportional to 463.65, 694.80 and 317.31

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Solution

The fourth proportional to 463.65, 694.80 and 317.31 is: 475.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.65 : 694.80 = 317.31 : x
  2. Step 2: Convert to fraction form
    463.65/694.80 = 317.31/x
  3. Step 3: Cross multiply
    463.65x = 694.80 × 317.31
  4. Step 4: Simplify right side
    463.65x = 220,466.99
  5. Step 5: Solve for x
    x = 220,466.99/463.65
  6. Step 6: Final answer
    x = 475.50

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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.