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Finding the Fourth Proportional to 458.54, 633.07 and 316.99

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Solution

The fourth proportional to 458.54, 633.07 and 316.99 is: 437.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.54 : 633.07 = 316.99 : x
  2. Step 2: Convert to fraction form
    458.54/633.07 = 316.99/x
  3. Step 3: Cross multiply
    458.54x = 633.07 × 316.99
  4. Step 4: Simplify right side
    458.54x = 200,678.05
  5. Step 5: Solve for x
    x = 200,678.05/458.54
  6. Step 6: Final answer
    x = 437.65

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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.