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Finding the Fourth Proportional to 1,150.18, 1,725.29 and 603.43

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Solution

The fourth proportional to 1,150.18, 1,725.29 and 603.43 is: 905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.18 : 1,725.29 = 603.43 : x
  2. Step 2: Convert to fraction form
    1,150.18/1,725.29 = 603.43/x
  3. Step 3: Cross multiply
    1,150.18x = 1,725.29 × 603.43
  4. Step 4: Simplify right side
    1,150.18x = 1,041,088.73
  5. Step 5: Solve for x
    x = 1,041,088.73/1,150.18
  6. Step 6: Final answer
    x = 905.15

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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.