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Finding the Fourth Proportional to 158.24, 237.02 and 100.40

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Solution

The fourth proportional to 158.24, 237.02 and 100.40 is: 150.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.24 : 237.02 = 100.40 : x
  2. Step 2: Convert to fraction form
    158.24/237.02 = 100.40/x
  3. Step 3: Cross multiply
    158.24x = 237.02 × 100.40
  4. Step 4: Simplify right side
    158.24x = 23,796.81
  5. Step 5: Solve for x
    x = 23,796.81/158.24
  6. Step 6: Final answer
    x = 150.38

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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.