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Finding the Fourth Proportional to 1,265.64, 1,898.66 and 444.02

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Solution

The fourth proportional to 1,265.64, 1,898.66 and 444.02 is: 666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.64 : 1,898.66 = 444.02 : x
  2. Step 2: Convert to fraction form
    1,265.64/1,898.66 = 444.02/x
  3. Step 3: Cross multiply
    1,265.64x = 1,898.66 × 444.02
  4. Step 4: Simplify right side
    1,265.64x = 843,043.01
  5. Step 5: Solve for x
    x = 843,043.01/1,265.64
  6. Step 6: Final answer
    x = 666.10

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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.