Home / 1,154.80-1,731.17-505.02

Finding the Fourth Proportional to 1,154.80, 1,731.17 and 505.02

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Solution

The fourth proportional to 1,154.80, 1,731.17 and 505.02 is: 757.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.80 : 1,731.17 = 505.02 : x
  2. Step 2: Convert to fraction form
    1,154.80/1,731.17 = 505.02/x
  3. Step 3: Cross multiply
    1,154.80x = 1,731.17 × 505.02
  4. Step 4: Simplify right side
    1,154.80x = 874,275.47
  5. Step 5: Solve for x
    x = 874,275.47/1,154.80
  6. Step 6: Final answer
    x = 757.08

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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.