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Finding the Fourth Proportional to 1,003.46, 1,505.01 and 354.08

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Solution

The fourth proportional to 1,003.46, 1,505.01 and 354.08 is: 531.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003.46 : 1,505.01 = 354.08 : x
  2. Step 2: Convert to fraction form
    1,003.46/1,505.01 = 354.08/x
  3. Step 3: Cross multiply
    1,003.46x = 1,505.01 × 354.08
  4. Step 4: Simplify right side
    1,003.46x = 532,893.94
  5. Step 5: Solve for x
    x = 532,893.94/1,003.46
  6. Step 6: Final answer
    x = 531.06

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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.