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Finding the Fourth Proportional to 470.29, 705.59 and 210.26

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Solution

The fourth proportional to 470.29, 705.59 and 210.26 is: 315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.29 : 705.59 = 210.26 : x
  2. Step 2: Convert to fraction form
    470.29/705.59 = 210.26/x
  3. Step 3: Cross multiply
    470.29x = 705.59 × 210.26
  4. Step 4: Simplify right side
    470.29x = 148,357.35
  5. Step 5: Solve for x
    x = 148,357.35/470.29
  6. Step 6: Final answer
    x = 315.46

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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.