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Finding the Fourth Proportional to 246.64, 340.28 and 153.28

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Solution

The fourth proportional to 246.64, 340.28 and 153.28 is: 211.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.64 : 340.28 = 153.28 : x
  2. Step 2: Convert to fraction form
    246.64/340.28 = 153.28/x
  3. Step 3: Cross multiply
    246.64x = 340.28 × 153.28
  4. Step 4: Simplify right side
    246.64x = 52,158.12
  5. Step 5: Solve for x
    x = 52,158.12/246.64
  6. Step 6: Final answer
    x = 211.47

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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.