Home / 1,180.40-1,769.64-530.72

Finding the Fourth Proportional to 1,180.40, 1,769.64 and 530.72

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Solution

The fourth proportional to 1,180.40, 1,769.64 and 530.72 is: 795.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.40 : 1,769.64 = 530.72 : x
  2. Step 2: Convert to fraction form
    1,180.40/1,769.64 = 530.72/x
  3. Step 3: Cross multiply
    1,180.40x = 1,769.64 × 530.72
  4. Step 4: Simplify right side
    1,180.40x = 939,183.34
  5. Step 5: Solve for x
    x = 939,183.34/1,180.40
  6. Step 6: Final answer
    x = 795.65

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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.