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Finding the Fourth Proportional to 270.70, 373.60 and 152.72

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Solution

The fourth proportional to 270.70, 373.60 and 152.72 is: 210.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.70 : 373.60 = 152.72 : x
  2. Step 2: Convert to fraction form
    270.70/373.60 = 152.72/x
  3. Step 3: Cross multiply
    270.70x = 373.60 × 152.72
  4. Step 4: Simplify right side
    270.70x = 57,057.28
  5. Step 5: Solve for x
    x = 57,057.28/270.70
  6. Step 6: Final answer
    x = 210.77

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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.