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Finding the Fourth Proportional to 102.28, 152.29 and 100.74

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Solution

The fourth proportional to 102.28, 152.29 and 100.74 is: 150.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102.28 : 152.29 = 100.74 : x
  2. Step 2: Convert to fraction form
    102.28/152.29 = 100.74/x
  3. Step 3: Cross multiply
    102.28x = 152.29 × 100.74
  4. Step 4: Simplify right side
    102.28x = 15,341.69
  5. Step 5: Solve for x
    x = 15,341.69/102.28
  6. Step 6: Final answer
    x = 150.00

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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.