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Finding the Fourth Proportional to 816.96, 1,225.76 and 304

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Solution

The fourth proportional to 816.96, 1,225.76 and 304 is: 456.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    816.96 : 1,225.76 = 304 : x
  2. Step 2: Convert to fraction form
    816.96/1,225.76 = 304/x
  3. Step 3: Cross multiply
    816.96x = 1,225.76 × 304
  4. Step 4: Simplify right side
    816.96x = 372,631.04
  5. Step 5: Solve for x
    x = 372,631.04/816.96
  6. Step 6: Final answer
    x = 456.12

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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.