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Finding the Fourth Proportional to 1,050.21, 1,448.96 and 607.95

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Solution

The fourth proportional to 1,050.21, 1,448.96 and 607.95 is: 838.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.21 : 1,448.96 = 607.95 : x
  2. Step 2: Convert to fraction form
    1,050.21/1,448.96 = 607.95/x
  3. Step 3: Cross multiply
    1,050.21x = 1,448.96 × 607.95
  4. Step 4: Simplify right side
    1,050.21x = 880,892.19
  5. Step 5: Solve for x
    x = 880,892.19/1,050.21
  6. Step 6: Final answer
    x = 838.78

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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.