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Finding the Fourth Proportional to 385.17, 577.62 and 154.02

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Solution

The fourth proportional to 385.17, 577.62 and 154.02 is: 230.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.17 : 577.62 = 154.02 : x
  2. Step 2: Convert to fraction form
    385.17/577.62 = 154.02/x
  3. Step 3: Cross multiply
    385.17x = 577.62 × 154.02
  4. Step 4: Simplify right side
    385.17x = 88,965.03
  5. Step 5: Solve for x
    x = 88,965.03/385.17
  6. Step 6: Final answer
    x = 230.98

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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.