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Finding the Fourth Proportional to 1,049.67, 1,448.31 and 607.56

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Solution

The fourth proportional to 1,049.67, 1,448.31 and 607.56 is: 838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.67 : 1,448.31 = 607.56 : x
  2. Step 2: Convert to fraction form
    1,049.67/1,448.31 = 607.56/x
  3. Step 3: Cross multiply
    1,049.67x = 1,448.31 × 607.56
  4. Step 4: Simplify right side
    1,049.67x = 879,935.22
  5. Step 5: Solve for x
    x = 879,935.22/1,049.67
  6. Step 6: Final answer
    x = 838.30

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1.5x scale

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.