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Finding the Fourth Proportional to 253.13, 379.54 and 88.50

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Solution

The fourth proportional to 253.13, 379.54 and 88.50 is: 132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.13 : 379.54 = 88.50 : x
  2. Step 2: Convert to fraction form
    253.13/379.54 = 88.50/x
  3. Step 3: Cross multiply
    253.13x = 379.54 × 88.50
  4. Step 4: Simplify right side
    253.13x = 33,590.33
  5. Step 5: Solve for x
    x = 33,590.33/253.13
  6. Step 6: Final answer
    x = 132.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.