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Finding the Fourth Proportional to 369.83, 509.93 and 245.30

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Solution

The fourth proportional to 369.83, 509.93 and 245.30 is: 338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.83 : 509.93 = 245.30 : x
  2. Step 2: Convert to fraction form
    369.83/509.93 = 245.30/x
  3. Step 3: Cross multiply
    369.83x = 509.93 × 245.30
  4. Step 4: Simplify right side
    369.83x = 125,082.97
  5. Step 5: Solve for x
    x = 125,082.97/369.83
  6. Step 6: Final answer
    x = 338.22

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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.