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Finding the Fourth Proportional to 1,927.15, 2,890.72 and 466.30

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Solution

The fourth proportional to 1,927.15, 2,890.72 and 466.30 is: 699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.15 : 2,890.72 = 466.30 : x
  2. Step 2: Convert to fraction form
    1,927.15/2,890.72 = 466.30/x
  3. Step 3: Cross multiply
    1,927.15x = 2,890.72 × 466.30
  4. Step 4: Simplify right side
    1,927.15x = 1,347,942.74
  5. Step 5: Solve for x
    x = 1,347,942.74/1,927.15
  6. Step 6: Final answer
    x = 699.45

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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.