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Finding the Fourth Proportional to 229.90, 345.13 and 93.05

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Solution

The fourth proportional to 229.90, 345.13 and 93.05 is: 139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.90 : 345.13 = 93.05 : x
  2. Step 2: Convert to fraction form
    229.90/345.13 = 93.05/x
  3. Step 3: Cross multiply
    229.90x = 345.13 × 93.05
  4. Step 4: Simplify right side
    229.90x = 32,113.02
  5. Step 5: Solve for x
    x = 32,113.02/229.90
  6. Step 6: Final answer
    x = 139.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.