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Finding the Fourth Proportional to 365.30, 504.30 and 247.90

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Solution

The fourth proportional to 365.30, 504.30 and 247.90 is: 342.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.30 : 504.30 = 247.90 : x
  2. Step 2: Convert to fraction form
    365.30/504.30 = 247.90/x
  3. Step 3: Cross multiply
    365.30x = 504.30 × 247.90
  4. Step 4: Simplify right side
    365.30x = 125,013.45
  5. Step 5: Solve for x
    x = 125,013.45/365.30
  6. Step 6: Final answer
    x = 342.22

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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.