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Finding the Fourth Proportional to 364, 545.64 and 266

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Solution

The fourth proportional to 364, 545.64 and 266 is: 398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    364 : 545.64 = 266 : x
  2. Step 2: Convert to fraction form
    364/545.64 = 266/x
  3. Step 3: Cross multiply
    364x = 545.64 × 266
  4. Step 4: Simplify right side
    364x = 145,140.24
  5. Step 5: Solve for x
    x = 145,140.24/364
  6. Step 6: Final answer
    x = 398.74

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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.