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Finding the Fourth Proportional to 1,417.80, 2,126.80 and 444.04

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Solution

The fourth proportional to 1,417.80, 2,126.80 and 444.04 is: 666.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.80 : 2,126.80 = 444.04 : x
  2. Step 2: Convert to fraction form
    1,417.80/2,126.80 = 444.04/x
  3. Step 3: Cross multiply
    1,417.80x = 2,126.80 × 444.04
  4. Step 4: Simplify right side
    1,417.80x = 944,384.27
  5. Step 5: Solve for x
    x = 944,384.27/1,417.80
  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.