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Finding the Fourth Proportional to 1,277.01, 1,915.51 and 444.06

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Solution

The fourth proportional to 1,277.01, 1,915.51 and 444.06 is: 666.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.01 : 1,915.51 = 444.06 : x
  2. Step 2: Convert to fraction form
    1,277.01/1,915.51 = 444.06/x
  3. Step 3: Cross multiply
    1,277.01x = 1,915.51 × 444.06
  4. Step 4: Simplify right side
    1,277.01x = 850,601.37
  5. Step 5: Solve for x
    x = 850,601.37/1,277.01
  6. Step 6: Final answer
    x = 666.09

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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.