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Finding the Fourth Proportional to 403.04, 604.40 and 146.48

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Solution

The fourth proportional to 403.04, 604.40 and 146.48 is: 219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.04 : 604.40 = 146.48 : x
  2. Step 2: Convert to fraction form
    403.04/604.40 = 146.48/x
  3. Step 3: Cross multiply
    403.04x = 604.40 × 146.48
  4. Step 4: Simplify right side
    403.04x = 88,532.51
  5. Step 5: Solve for x
    x = 88,532.51/403.04
  6. Step 6: Final answer
    x = 219.66

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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.