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Finding the Fourth Proportional to 1,254.20, 1,878.56 and 603.56

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Solution

The fourth proportional to 1,254.20, 1,878.56 and 603.56 is: 904.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.20 : 1,878.56 = 603.56 : x
  2. Step 2: Convert to fraction form
    1,254.20/1,878.56 = 603.56/x
  3. Step 3: Cross multiply
    1,254.20x = 1,878.56 × 603.56
  4. Step 4: Simplify right side
    1,254.20x = 1,133,827.62
  5. Step 5: Solve for x
    x = 1,133,827.62/1,254.20
  6. Step 6: Final answer
    x = 904.03

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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.