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Finding the Fourth Proportional to 470.63, 706.02 and 383.76

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Solution

The fourth proportional to 470.63, 706.02 and 383.76 is: 575.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.63 : 706.02 = 383.76 : x
  2. Step 2: Convert to fraction form
    470.63/706.02 = 383.76/x
  3. Step 3: Cross multiply
    470.63x = 706.02 × 383.76
  4. Step 4: Simplify right side
    470.63x = 270,942.24
  5. Step 5: Solve for x
    x = 270,942.24/470.63
  6. Step 6: Final answer
    x = 575.70

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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.