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Finding the Fourth Proportional to 579.15, 873.45 and 560.66

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Solution

The fourth proportional to 579.15, 873.45 and 560.66 is: 845.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.15 : 873.45 = 560.66 : x
  2. Step 2: Convert to fraction form
    579.15/873.45 = 560.66/x
  3. Step 3: Cross multiply
    579.15x = 873.45 × 560.66
  4. Step 4: Simplify right side
    579.15x = 489,704.11
  5. Step 5: Solve for x
    x = 489,704.11/579.15
  6. Step 6: Final answer
    x = 845.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.