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Finding the Fourth Proportional to 153.04, 230.40 and 105.24

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Solution

The fourth proportional to 153.04, 230.40 and 105.24 is: 158.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.04 : 230.40 = 105.24 : x
  2. Step 2: Convert to fraction form
    153.04/230.40 = 105.24/x
  3. Step 3: Cross multiply
    153.04x = 230.40 × 105.24
  4. Step 4: Simplify right side
    153.04x = 24,247.30
  5. Step 5: Solve for x
    x = 24,247.30/153.04
  6. Step 6: Final answer
    x = 158.44

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.