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Finding the Fourth Proportional to 177.08, 244.34 and 103.40

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Solution

The fourth proportional to 177.08, 244.34 and 103.40 is: 142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.08 : 244.34 = 103.40 : x
  2. Step 2: Convert to fraction form
    177.08/244.34 = 103.40/x
  3. Step 3: Cross multiply
    177.08x = 244.34 × 103.40
  4. Step 4: Simplify right side
    177.08x = 25,264.76
  5. Step 5: Solve for x
    x = 25,264.76/177.08
  6. Step 6: Final answer
    x = 142.67

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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.