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Finding the Fourth Proportional to 470.80, 705.57 and 265.24

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Solution

The fourth proportional to 470.80, 705.57 and 265.24 is: 397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.80 : 705.57 = 265.24 : x
  2. Step 2: Convert to fraction form
    470.80/705.57 = 265.24/x
  3. Step 3: Cross multiply
    470.80x = 705.57 × 265.24
  4. Step 4: Simplify right side
    470.80x = 187,145.39
  5. Step 5: Solve for x
    x = 187,145.39/470.80
  6. Step 6: Final answer
    x = 397.51

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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.