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Finding the Fourth Proportional to 245.74, 368.68 and 153.13

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Solution

The fourth proportional to 245.74, 368.68 and 153.13 is: 229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.74 : 368.68 = 153.13 : x
  2. Step 2: Convert to fraction form
    245.74/368.68 = 153.13/x
  3. Step 3: Cross multiply
    245.74x = 368.68 × 153.13
  4. Step 4: Simplify right side
    245.74x = 56,455.97
  5. Step 5: Solve for x
    x = 56,455.97/245.74
  6. Step 6: Final answer
    x = 229.74

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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.