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Finding the Fourth Proportional to 1,045.13, 1,568.10 and 773.51

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Solution

The fourth proportional to 1,045.13, 1,568.10 and 773.51 is: 1,160.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.13 : 1,568.10 = 773.51 : x
  2. Step 2: Convert to fraction form
    1,045.13/1,568.10 = 773.51/x
  3. Step 3: Cross multiply
    1,045.13x = 1,568.10 × 773.51
  4. Step 4: Simplify right side
    1,045.13x = 1,212,941.03
  5. Step 5: Solve for x
    x = 1,212,941.03/1,045.13
  6. Step 6: Final answer
    x = 1,160.56

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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.