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Finding the Fourth Proportional to 102.33, 152.55 and 100.35

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Solution

The fourth proportional to 102.33, 152.55 and 100.35 is: 149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102.33 : 152.55 = 100.35 : x
  2. Step 2: Convert to fraction form
    102.33/152.55 = 100.35/x
  3. Step 3: Cross multiply
    102.33x = 152.55 × 100.35
  4. Step 4: Simplify right side
    102.33x = 15,308.39
  5. Step 5: Solve for x
    x = 15,308.39/102.33
  6. Step 6: Final answer
    x = 149.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.