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Finding the Fourth Proportional to 560.49, 840.73 and 170.49

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Solution

The fourth proportional to 560.49, 840.73 and 170.49 is: 255.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.49 : 840.73 = 170.49 : x
  2. Step 2: Convert to fraction form
    560.49/840.73 = 170.49/x
  3. Step 3: Cross multiply
    560.49x = 840.73 × 170.49
  4. Step 4: Simplify right side
    560.49x = 143,335.63
  5. Step 5: Solve for x
    x = 143,335.63/560.49
  6. Step 6: Final answer
    x = 255.73

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Double scale
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Similar ratio
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1.5x scale

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.