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Finding the Fourth Proportional to 265.61, 398.37 and 73.19

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Solution

The fourth proportional to 265.61, 398.37 and 73.19 is: 109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.61 : 398.37 = 73.19 : x
  2. Step 2: Convert to fraction form
    265.61/398.37 = 73.19/x
  3. Step 3: Cross multiply
    265.61x = 398.37 × 73.19
  4. Step 4: Simplify right side
    265.61x = 29,156.70
  5. Step 5: Solve for x
    x = 29,156.70/265.61
  6. Step 6: Final answer
    x = 109.77

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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.