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Finding the Fourth Proportional to 364.09, 545.50 and 260.87

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Solution

The fourth proportional to 364.09, 545.50 and 260.87 is: 390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.09 : 545.50 = 260.87 : x
  2. Step 2: Convert to fraction form
    364.09/545.50 = 260.87/x
  3. Step 3: Cross multiply
    364.09x = 545.50 × 260.87
  4. Step 4: Simplify right side
    364.09x = 142,301.21
  5. Step 5: Solve for x
    x = 142,301.21/364.09
  6. Step 6: Final answer
    x = 390.84

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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.