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Finding the Fourth Proportional to 1,008.10, 1,505.39 and 1,003.24

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Solution

The fourth proportional to 1,008.10, 1,505.39 and 1,003.24 is: 1,498.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.10 : 1,505.39 = 1,003.24 : x
  2. Step 2: Convert to fraction form
    1,008.10/1,505.39 = 1,003.24/x
  3. Step 3: Cross multiply
    1,008.10x = 1,505.39 × 1,003.24
  4. Step 4: Simplify right side
    1,008.10x = 1,510,267.46
  5. Step 5: Solve for x
    x = 1,510,267.46/1,008.10
  6. Step 6: Final answer
    x = 1,498.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.