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Finding the Fourth Proportional to 1,050.18, 1,449.09 and 657.06

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Solution

The fourth proportional to 1,050.18, 1,449.09 and 657.06 is: 906.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.18 : 1,449.09 = 657.06 : x
  2. Step 2: Convert to fraction form
    1,050.18/1,449.09 = 657.06/x
  3. Step 3: Cross multiply
    1,050.18x = 1,449.09 × 657.06
  4. Step 4: Simplify right side
    1,050.18x = 952,139.08
  5. Step 5: Solve for x
    x = 952,139.08/1,050.18
  6. Step 6: Final answer
    x = 906.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.