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Finding the Fourth Proportional to 774.18, 1,160.21 and 500.13

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Solution

The fourth proportional to 774.18, 1,160.21 and 500.13 is: 749.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.18 : 1,160.21 = 500.13 : x
  2. Step 2: Convert to fraction form
    774.18/1,160.21 = 500.13/x
  3. Step 3: Cross multiply
    774.18x = 1,160.21 × 500.13
  4. Step 4: Simplify right side
    774.18x = 580,253.33
  5. Step 5: Solve for x
    x = 580,253.33/774.18
  6. Step 6: Final answer
    x = 749.51

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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.