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Finding the Fourth Proportional to 470.54, 707.33 and 455.96

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Solution

The fourth proportional to 470.54, 707.33 and 455.96 is: 685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.54 : 707.33 = 455.96 : x
  2. Step 2: Convert to fraction form
    470.54/707.33 = 455.96/x
  3. Step 3: Cross multiply
    470.54x = 707.33 × 455.96
  4. Step 4: Simplify right side
    470.54x = 322,514.19
  5. Step 5: Solve for x
    x = 322,514.19/470.54
  6. Step 6: Final answer
    x = 685.41

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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.