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Finding the Fourth Proportional to 487.88, 729.66 and 364.76

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Solution

The fourth proportional to 487.88, 729.66 and 364.76 is: 545.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.88 : 729.66 = 364.76 : x
  2. Step 2: Convert to fraction form
    487.88/729.66 = 364.76/x
  3. Step 3: Cross multiply
    487.88x = 729.66 × 364.76
  4. Step 4: Simplify right side
    487.88x = 266,150.78
  5. Step 5: Solve for x
    x = 266,150.78/487.88
  6. Step 6: Final answer
    x = 545.53

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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.