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Finding the Fourth Proportional to 402.60, 604.10 and 305.06

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Solution

The fourth proportional to 402.60, 604.10 and 305.06 is: 457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.60 : 604.10 = 305.06 : x
  2. Step 2: Convert to fraction form
    402.60/604.10 = 305.06/x
  3. Step 3: Cross multiply
    402.60x = 604.10 × 305.06
  4. Step 4: Simplify right side
    402.60x = 184,285.22
  5. Step 5: Solve for x
    x = 184,285.22/402.60
  6. Step 6: Final answer
    x = 457.74

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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.