Home / 1,179.39-1,769.49-530.40

Finding the Fourth Proportional to 1,179.39, 1,769.49 and 530.40

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Solution

The fourth proportional to 1,179.39, 1,769.49 and 530.40 is: 795.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.39 : 1,769.49 = 530.40 : x
  2. Step 2: Convert to fraction form
    1,179.39/1,769.49 = 530.40/x
  3. Step 3: Cross multiply
    1,179.39x = 1,769.49 × 530.40
  4. Step 4: Simplify right side
    1,179.39x = 938,537.50
  5. Step 5: Solve for x
    x = 938,537.50/1,179.39
  6. Step 6: Final answer
    x = 795.78

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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.