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Finding the Fourth Proportional to 245.07, 337.75 and 203.40

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Solution

The fourth proportional to 245.07, 337.75 and 203.40 is: 280.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.07 : 337.75 = 203.40 : x
  2. Step 2: Convert to fraction form
    245.07/337.75 = 203.40/x
  3. Step 3: Cross multiply
    245.07x = 337.75 × 203.40
  4. Step 4: Simplify right side
    245.07x = 68,698.35
  5. Step 5: Solve for x
    x = 68,698.35/245.07
  6. Step 6: Final answer
    x = 280.32

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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.