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Finding the Fourth Proportional to 1,045.17, 1,573.85 and 773.18

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Solution

The fourth proportional to 1,045.17, 1,573.85 and 773.18 is: 1,164.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.17 : 1,573.85 = 773.18 : x
  2. Step 2: Convert to fraction form
    1,045.17/1,573.85 = 773.18/x
  3. Step 3: Cross multiply
    1,045.17x = 1,573.85 × 773.18
  4. Step 4: Simplify right side
    1,045.17x = 1,216,857.61
  5. Step 5: Solve for x
    x = 1,216,857.61/1,045.17
  6. Step 6: Final answer
    x = 1,164.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.