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Finding the Fourth Proportional to 572.59, 860.04 and 442.84

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Solution

The fourth proportional to 572.59, 860.04 and 442.84 is: 665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.59 : 860.04 = 442.84 : x
  2. Step 2: Convert to fraction form
    572.59/860.04 = 442.84/x
  3. Step 3: Cross multiply
    572.59x = 860.04 × 442.84
  4. Step 4: Simplify right side
    572.59x = 380,860.11
  5. Step 5: Solve for x
    x = 380,860.11/572.59
  6. Step 6: Final answer
    x = 665.15

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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.