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Finding the Fourth Proportional to 330.75, 497.27 and 309.35

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Solution

The fourth proportional to 330.75, 497.27 and 309.35 is: 465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.75 : 497.27 = 309.35 : x
  2. Step 2: Convert to fraction form
    330.75/497.27 = 309.35/x
  3. Step 3: Cross multiply
    330.75x = 497.27 × 309.35
  4. Step 4: Simplify right side
    330.75x = 153,832.49
  5. Step 5: Solve for x
    x = 153,832.49/330.75
  6. Step 6: Final answer
    x = 465.10

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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.