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Finding the Fourth Proportional to 560.32, 839.72 and 423.25

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Solution

The fourth proportional to 560.32, 839.72 and 423.25 is: 634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.32 : 839.72 = 423.25 : x
  2. Step 2: Convert to fraction form
    560.32/839.72 = 423.25/x
  3. Step 3: Cross multiply
    560.32x = 839.72 × 423.25
  4. Step 4: Simplify right side
    560.32x = 355,411.49
  5. Step 5: Solve for x
    x = 355,411.49/560.32
  6. Step 6: Final answer
    x = 634.30

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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.