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Finding the Fourth Proportional to 829.67, 1,144.93 and 456.65

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Solution

The fourth proportional to 829.67, 1,144.93 and 456.65 is: 630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    829.67 : 1,144.93 = 456.65 : x
  2. Step 2: Convert to fraction form
    829.67/1,144.93 = 456.65/x
  3. Step 3: Cross multiply
    829.67x = 1,144.93 × 456.65
  4. Step 4: Simplify right side
    829.67x = 522,832.28
  5. Step 5: Solve for x
    x = 522,832.28/829.67
  6. Step 6: Final answer
    x = 630.17

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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.