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Finding the Fourth Proportional to 330.64, 497.10 and 309.23

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Solution

The fourth proportional to 330.64, 497.10 and 309.23 is: 464.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.64 : 497.10 = 309.23 : x
  2. Step 2: Convert to fraction form
    330.64/497.10 = 309.23/x
  3. Step 3: Cross multiply
    330.64x = 497.10 × 309.23
  4. Step 4: Simplify right side
    330.64x = 153,715.75
  5. Step 5: Solve for x
    x = 153,715.75/330.64
  6. Step 6: Final answer
    x = 464.91

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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.