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Finding the Fourth Proportional to 470.50, 649.25 and 260.65

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Solution

The fourth proportional to 470.50, 649.25 and 260.65 is: 359.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.50 : 649.25 = 260.65 : x
  2. Step 2: Convert to fraction form
    470.50/649.25 = 260.65/x
  3. Step 3: Cross multiply
    470.50x = 649.25 × 260.65
  4. Step 4: Simplify right side
    470.50x = 169,227.01
  5. Step 5: Solve for x
    x = 169,227.01/470.50
  6. Step 6: Final answer
    x = 359.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.