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Finding the Fourth Proportional to 242.62, 334.67 and 155.34

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Solution

The fourth proportional to 242.62, 334.67 and 155.34 is: 214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.62 : 334.67 = 155.34 : x
  2. Step 2: Convert to fraction form
    242.62/334.67 = 155.34/x
  3. Step 3: Cross multiply
    242.62x = 334.67 × 155.34
  4. Step 4: Simplify right side
    242.62x = 51,986.86
  5. Step 5: Solve for x
    x = 51,986.86/242.62
  6. Step 6: Final answer
    x = 214.27

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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.