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Finding the Fourth Proportional to 470.12, 705.63 and 340.27

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Solution

The fourth proportional to 470.12, 705.63 and 340.27 is: 510.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.12 : 705.63 = 340.27 : x
  2. Step 2: Convert to fraction form
    470.12/705.63 = 340.27/x
  3. Step 3: Cross multiply
    470.12x = 705.63 × 340.27
  4. Step 4: Simplify right side
    470.12x = 240,101.19
  5. Step 5: Solve for x
    x = 240,101.19/470.12
  6. Step 6: Final answer
    x = 510.73

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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.