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Finding the Fourth Proportional to 1,474.51, 2,211.87 and 434.68

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Solution

The fourth proportional to 1,474.51, 2,211.87 and 434.68 is: 652.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.51 : 2,211.87 = 434.68 : x
  2. Step 2: Convert to fraction form
    1,474.51/2,211.87 = 434.68/x
  3. Step 3: Cross multiply
    1,474.51x = 2,211.87 × 434.68
  4. Step 4: Simplify right side
    1,474.51x = 961,455.65
  5. Step 5: Solve for x
    x = 961,455.65/1,474.51
  6. Step 6: Final answer
    x = 652.05

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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.