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Finding the Fourth Proportional to 155.04, 231 and 144

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Solution

The fourth proportional to 155.04, 231 and 144 is: 214.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.04 : 231 = 144 : x
  2. Step 2: Convert to fraction form
    155.04/231 = 144/x
  3. Step 3: Cross multiply
    155.04x = 231 × 144
  4. Step 4: Simplify right side
    155.04x = 33,264
  5. Step 5: Solve for x
    x = 33,264/155.04
  6. Step 6: Final answer
    x = 214.55

Related Problems

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Double scale
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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.