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Finding the Fourth Proportional to 386.86, 533.76 and 262.93

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Solution

The fourth proportional to 386.86, 533.76 and 262.93 is: 362.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.86 : 533.76 = 262.93 : x
  2. Step 2: Convert to fraction form
    386.86/533.76 = 262.93/x
  3. Step 3: Cross multiply
    386.86x = 533.76 × 262.93
  4. Step 4: Simplify right side
    386.86x = 140,341.52
  5. Step 5: Solve for x
    x = 140,341.52/386.86
  6. Step 6: Final answer
    x = 362.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.