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Finding the Fourth Proportional to 1,152.71, 1,728.30 and 567.18

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Solution

The fourth proportional to 1,152.71, 1,728.30 and 567.18 is: 850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.71 : 1,728.30 = 567.18 : x
  2. Step 2: Convert to fraction form
    1,152.71/1,728.30 = 567.18/x
  3. Step 3: Cross multiply
    1,152.71x = 1,728.30 × 567.18
  4. Step 4: Simplify right side
    1,152.71x = 980,257.19
  5. Step 5: Solve for x
    x = 980,257.19/1,152.71
  6. Step 6: Final answer
    x = 850.40

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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.