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Finding the Fourth Proportional to 254.76, 351.54 and 155.19

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Solution

The fourth proportional to 254.76, 351.54 and 155.19 is: 214.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.76 : 351.54 = 155.19 : x
  2. Step 2: Convert to fraction form
    254.76/351.54 = 155.19/x
  3. Step 3: Cross multiply
    254.76x = 351.54 × 155.19
  4. Step 4: Simplify right side
    254.76x = 54,555.49
  5. Step 5: Solve for x
    x = 54,555.49/254.76
  6. Step 6: Final answer
    x = 214.14

Related Problems

Find fourth proportional to 127.38, 175.77 and 77.60
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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.