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Finding the Fourth Proportional to 459.28, 633.36 and 348.76

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Solution

The fourth proportional to 459.28, 633.36 and 348.76 is: 480.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.28 : 633.36 = 348.76 : x
  2. Step 2: Convert to fraction form
    459.28/633.36 = 348.76/x
  3. Step 3: Cross multiply
    459.28x = 633.36 × 348.76
  4. Step 4: Simplify right side
    459.28x = 220,890.63
  5. Step 5: Solve for x
    x = 220,890.63/459.28
  6. Step 6: Final answer
    x = 480.95

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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.