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Finding the Fourth Proportional to 560.88, 841.28 and 170.90

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Solution

The fourth proportional to 560.88, 841.28 and 170.90 is: 256.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.88 : 841.28 = 170.90 : x
  2. Step 2: Convert to fraction form
    560.88/841.28 = 170.90/x
  3. Step 3: Cross multiply
    560.88x = 841.28 × 170.90
  4. Step 4: Simplify right side
    560.88x = 143,770.97
  5. Step 5: Solve for x
    x = 143,770.97/560.88
  6. Step 6: Final answer
    x = 256.33

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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.