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Finding the Fourth Proportional to 245.33, 368.13 and 99.05

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Solution

The fourth proportional to 245.33, 368.13 and 99.05 is: 148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.33 : 368.13 = 99.05 : x
  2. Step 2: Convert to fraction form
    245.33/368.13 = 99.05/x
  3. Step 3: Cross multiply
    245.33x = 368.13 × 99.05
  4. Step 4: Simplify right side
    245.33x = 36,461.44
  5. Step 5: Solve for x
    x = 36,461.44/245.33
  6. Step 6: Final answer
    x = 148.63

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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.