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Finding the Fourth Proportional to 253.02, 346.59 and 247.35

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Solution

The fourth proportional to 253.02, 346.59 and 247.35 is: 338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.02 : 346.59 = 247.35 : x
  2. Step 2: Convert to fraction form
    253.02/346.59 = 247.35/x
  3. Step 3: Cross multiply
    253.02x = 346.59 × 247.35
  4. Step 4: Simplify right side
    253.02x = 85,729.04
  5. Step 5: Solve for x
    x = 85,729.04/253.02
  6. Step 6: Final answer
    x = 338.82

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.