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Finding the Fourth Proportional to 1,470.65, 2,205.82 and 496.76

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Solution

The fourth proportional to 1,470.65, 2,205.82 and 496.76 is: 745.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.65 : 2,205.82 = 496.76 : x
  2. Step 2: Convert to fraction form
    1,470.65/2,205.82 = 496.76/x
  3. Step 3: Cross multiply
    1,470.65x = 2,205.82 × 496.76
  4. Step 4: Simplify right side
    1,470.65x = 1,095,763.14
  5. Step 5: Solve for x
    x = 1,095,763.14/1,470.65
  6. Step 6: Final answer
    x = 745.09

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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.