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Finding the Fourth Proportional to 1,434.46, 2,151.71 and 556.87

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Solution

The fourth proportional to 1,434.46, 2,151.71 and 556.87 is: 835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.46 : 2,151.71 = 556.87 : x
  2. Step 2: Convert to fraction form
    1,434.46/2,151.71 = 556.87/x
  3. Step 3: Cross multiply
    1,434.46x = 2,151.71 × 556.87
  4. Step 4: Simplify right side
    1,434.46x = 1,198,217.79
  5. Step 5: Solve for x
    x = 1,198,217.79/1,434.46
  6. Step 6: Final answer
    x = 835.31

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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.