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Finding the Fourth Proportional to 977.77, 1,466.47 and 328.33

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Solution

The fourth proportional to 977.77, 1,466.47 and 328.33 is: 492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.77 : 1,466.47 = 328.33 : x
  2. Step 2: Convert to fraction form
    977.77/1,466.47 = 328.33/x
  3. Step 3: Cross multiply
    977.77x = 1,466.47 × 328.33
  4. Step 4: Simplify right side
    977.77x = 481,486.10
  5. Step 5: Solve for x
    x = 481,486.10/977.77
  6. Step 6: Final answer
    x = 492.43

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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.