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Finding the Fourth Proportional to 560.54, 839.48 and 285.94

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Solution

The fourth proportional to 560.54, 839.48 and 285.94 is: 428.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.54 : 839.48 = 285.94 : x
  2. Step 2: Convert to fraction form
    560.54/839.48 = 285.94/x
  3. Step 3: Cross multiply
    560.54x = 839.48 × 285.94
  4. Step 4: Simplify right side
    560.54x = 240,040.91
  5. Step 5: Solve for x
    x = 240,040.91/560.54
  6. Step 6: Final answer
    x = 428.23

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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.