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Finding the Fourth Proportional to 977.50, 1,466.93 and 400.38

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Solution

The fourth proportional to 977.50, 1,466.93 and 400.38 is: 600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.50 : 1,466.93 = 400.38 : x
  2. Step 2: Convert to fraction form
    977.50/1,466.93 = 400.38/x
  3. Step 3: Cross multiply
    977.50x = 1,466.93 × 400.38
  4. Step 4: Simplify right side
    977.50x = 587,329.43
  5. Step 5: Solve for x
    x = 587,329.43/977.50
  6. Step 6: Final answer
    x = 600.85

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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.