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Finding the Fourth Proportional to 176.09, 242.99 and 102.40

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Solution

The fourth proportional to 176.09, 242.99 and 102.40 is: 141.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.09 : 242.99 = 102.40 : x
  2. Step 2: Convert to fraction form
    176.09/242.99 = 102.40/x
  3. Step 3: Cross multiply
    176.09x = 242.99 × 102.40
  4. Step 4: Simplify right side
    176.09x = 24,880.45
  5. Step 5: Solve for x
    x = 24,880.45/176.09
  6. Step 6: Final answer
    x = 141.29

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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.