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Finding the Fourth Proportional to 104.98, 158.35 and 103.93

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Solution

The fourth proportional to 104.98, 158.35 and 103.93 is: 156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.98 : 158.35 = 103.93 : x
  2. Step 2: Convert to fraction form
    104.98/158.35 = 103.93/x
  3. Step 3: Cross multiply
    104.98x = 158.35 × 103.93
  4. Step 4: Simplify right side
    104.98x = 16,457.32
  5. Step 5: Solve for x
    x = 16,457.32/104.98
  6. Step 6: Final answer
    x = 156.77

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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.