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Finding the Fourth Proportional to 605.32, 909.48 and 572.20

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Solution

The fourth proportional to 605.32, 909.48 and 572.20 is: 859.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.32 : 909.48 = 572.20 : x
  2. Step 2: Convert to fraction form
    605.32/909.48 = 572.20/x
  3. Step 3: Cross multiply
    605.32x = 909.48 × 572.20
  4. Step 4: Simplify right side
    605.32x = 520,404.46
  5. Step 5: Solve for x
    x = 520,404.46/605.32
  6. Step 6: Final answer
    x = 859.72

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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.