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Finding the Fourth Proportional to 1,134.18, 1,700.76 and 517.74

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Solution

The fourth proportional to 1,134.18, 1,700.76 and 517.74 is: 776.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.18 : 1,700.76 = 517.74 : x
  2. Step 2: Convert to fraction form
    1,134.18/1,700.76 = 517.74/x
  3. Step 3: Cross multiply
    1,134.18x = 1,700.76 × 517.74
  4. Step 4: Simplify right side
    1,134.18x = 880,551.48
  5. Step 5: Solve for x
    x = 880,551.48/1,134.18
  6. Step 6: Final answer
    x = 776.38

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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.