Home / 1,154.76-1,731.60-505.68

Finding the Fourth Proportional to 1,154.76, 1,731.60 and 505.68

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Solution

The fourth proportional to 1,154.76, 1,731.60 and 505.68 is: 758.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.76 : 1,731.60 = 505.68 : x
  2. Step 2: Convert to fraction form
    1,154.76/1,731.60 = 505.68/x
  3. Step 3: Cross multiply
    1,154.76x = 1,731.60 × 505.68
  4. Step 4: Simplify right side
    1,154.76x = 875,635.49
  5. Step 5: Solve for x
    x = 875,635.49/1,154.76
  6. Step 6: Final answer
    x = 758.28

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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.