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Finding the Fourth Proportional to 1,529.01, 2,110.04 and 830.39

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Solution

The fourth proportional to 1,529.01, 2,110.04 and 830.39 is: 1,145.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.01 : 2,110.04 = 830.39 : x
  2. Step 2: Convert to fraction form
    1,529.01/2,110.04 = 830.39/x
  3. Step 3: Cross multiply
    1,529.01x = 2,110.04 × 830.39
  4. Step 4: Simplify right side
    1,529.01x = 1,752,141.41
  5. Step 5: Solve for x
    x = 1,752,141.41/1,529.01
  6. Step 6: Final answer
    x = 1,145.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.