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Finding the Fourth Proportional to 492.36, 737.52 and 477.78

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Solution

The fourth proportional to 492.36, 737.52 and 477.78 is: 715.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.36 : 737.52 = 477.78 : x
  2. Step 2: Convert to fraction form
    492.36/737.52 = 477.78/x
  3. Step 3: Cross multiply
    492.36x = 737.52 × 477.78
  4. Step 4: Simplify right side
    492.36x = 352,372.31
  5. Step 5: Solve for x
    x = 352,372.31/492.36
  6. Step 6: Final answer
    x = 715.68

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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.