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Finding the Fourth Proportional to 364.83, 545.99 and 261.93

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Solution

The fourth proportional to 364.83, 545.99 and 261.93 is: 391.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.83 : 545.99 = 261.93 : x
  2. Step 2: Convert to fraction form
    364.83/545.99 = 261.93/x
  3. Step 3: Cross multiply
    364.83x = 545.99 × 261.93
  4. Step 4: Simplify right side
    364.83x = 143,009.85
  5. Step 5: Solve for x
    x = 143,009.85/364.83
  6. Step 6: Final answer
    x = 391.99

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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.