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Finding the Fourth Proportional to 470.62, 705.50 and 253.94

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Solution

The fourth proportional to 470.62, 705.50 and 253.94 is: 380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.62 : 705.50 = 253.94 : x
  2. Step 2: Convert to fraction form
    470.62/705.50 = 253.94/x
  3. Step 3: Cross multiply
    470.62x = 705.50 × 253.94
  4. Step 4: Simplify right side
    470.62x = 179,154.67
  5. Step 5: Solve for x
    x = 179,154.67/470.62
  6. Step 6: Final answer
    x = 380.68

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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.