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Finding the Fourth Proportional to 1,143.76, 1,715.64 and 567.04

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Solution

The fourth proportional to 1,143.76, 1,715.64 and 567.04 is: 850.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.76 : 1,715.64 = 567.04 : x
  2. Step 2: Convert to fraction form
    1,143.76/1,715.64 = 567.04/x
  3. Step 3: Cross multiply
    1,143.76x = 1,715.64 × 567.04
  4. Step 4: Simplify right side
    1,143.76x = 972,836.51
  5. Step 5: Solve for x
    x = 972,836.51/1,143.76
  6. Step 6: Final answer
    x = 850.56

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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.