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Finding the Fourth Proportional to 1,574.71, 2,362.14 and 479.09

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Solution

The fourth proportional to 1,574.71, 2,362.14 and 479.09 is: 718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.71 : 2,362.14 = 479.09 : x
  2. Step 2: Convert to fraction form
    1,574.71/2,362.14 = 479.09/x
  3. Step 3: Cross multiply
    1,574.71x = 2,362.14 × 479.09
  4. Step 4: Simplify right side
    1,574.71x = 1,131,683.56
  5. Step 5: Solve for x
    x = 1,131,683.56/1,574.71
  6. Step 6: Final answer
    x = 718.66

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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.