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Finding the Fourth Proportional to 560.56, 844.20 and 489.28

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Solution

The fourth proportional to 560.56, 844.20 and 489.28 is: 736.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.56 : 844.20 = 489.28 : x
  2. Step 2: Convert to fraction form
    560.56/844.20 = 489.28/x
  3. Step 3: Cross multiply
    560.56x = 844.20 × 489.28
  4. Step 4: Simplify right side
    560.56x = 413,050.18
  5. Step 5: Solve for x
    x = 413,050.18/560.56
  6. Step 6: Final answer
    x = 736.85

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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.