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Finding the Fourth Proportional to 572.88, 859.32 and 140.04

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Solution

The fourth proportional to 572.88, 859.32 and 140.04 is: 210.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.88 : 859.32 = 140.04 : x
  2. Step 2: Convert to fraction form
    572.88/859.32 = 140.04/x
  3. Step 3: Cross multiply
    572.88x = 859.32 × 140.04
  4. Step 4: Simplify right side
    572.88x = 120,339.17
  5. Step 5: Solve for x
    x = 120,339.17/572.88
  6. Step 6: Final answer
    x = 210.06

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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.