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Finding the Fourth Proportional to 345.02, 476.16 and 245.62

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Solution

The fourth proportional to 345.02, 476.16 and 245.62 is: 338.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.02 : 476.16 = 245.62 : x
  2. Step 2: Convert to fraction form
    345.02/476.16 = 245.62/x
  3. Step 3: Cross multiply
    345.02x = 476.16 × 245.62
  4. Step 4: Simplify right side
    345.02x = 116,952.04
  5. Step 5: Solve for x
    x = 116,952.04/345.02
  6. Step 6: Final answer
    x = 338.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.