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Finding the Fourth Proportional to 153.03, 228.58 and 144.15

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Solution

The fourth proportional to 153.03, 228.58 and 144.15 is: 215.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.03 : 228.58 = 144.15 : x
  2. Step 2: Convert to fraction form
    153.03/228.58 = 144.15/x
  3. Step 3: Cross multiply
    153.03x = 228.58 × 144.15
  4. Step 4: Simplify right side
    153.03x = 32,949.63
  5. Step 5: Solve for x
    x = 32,949.63/153.03
  6. Step 6: Final answer
    x = 215.31

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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.