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Finding the Fourth Proportional to 385.56, 577.53 and 263.25

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Solution

The fourth proportional to 385.56, 577.53 and 263.25 is: 394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.56 : 577.53 = 263.25 : x
  2. Step 2: Convert to fraction form
    385.56/577.53 = 263.25/x
  3. Step 3: Cross multiply
    385.56x = 577.53 × 263.25
  4. Step 4: Simplify right side
    385.56x = 152,034.77
  5. Step 5: Solve for x
    x = 152,034.77/385.56
  6. Step 6: Final answer
    x = 394.32

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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.