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Finding the Fourth Proportional to 245.25, 370.08 and 243.90

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Solution

The fourth proportional to 245.25, 370.08 and 243.90 is: 368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.25 : 370.08 = 243.90 : x
  2. Step 2: Convert to fraction form
    245.25/370.08 = 243.90/x
  3. Step 3: Cross multiply
    245.25x = 370.08 × 243.90
  4. Step 4: Simplify right side
    245.25x = 90,262.51
  5. Step 5: Solve for x
    x = 90,262.51/245.25
  6. Step 6: Final answer
    x = 368.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.