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Finding the Fourth Proportional to 458.07, 633.20 and 328.20

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Solution

The fourth proportional to 458.07, 633.20 and 328.20 is: 453.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.07 : 633.20 = 328.20 : x
  2. Step 2: Convert to fraction form
    458.07/633.20 = 328.20/x
  3. Step 3: Cross multiply
    458.07x = 633.20 × 328.20
  4. Step 4: Simplify right side
    458.07x = 207,814.60
  5. Step 5: Solve for x
    x = 207,814.60/458.07
  6. Step 6: Final answer
    x = 453.67

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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.