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Finding the Fourth Proportional to 458.95, 633.22 and 272.28

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Solution

The fourth proportional to 458.95, 633.22 and 272.28 is: 375.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.95 : 633.22 = 272.28 : x
  2. Step 2: Convert to fraction form
    458.95/633.22 = 272.28/x
  3. Step 3: Cross multiply
    458.95x = 633.22 × 272.28
  4. Step 4: Simplify right side
    458.95x = 172,412.46
  5. Step 5: Solve for x
    x = 172,412.46/458.95
  6. Step 6: Final answer
    x = 375.67

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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.