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Finding the Fourth Proportional to 563.71, 845.56 and 255.50

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Solution

The fourth proportional to 563.71, 845.56 and 255.50 is: 383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.71 : 845.56 = 255.50 : x
  2. Step 2: Convert to fraction form
    563.71/845.56 = 255.50/x
  3. Step 3: Cross multiply
    563.71x = 845.56 × 255.50
  4. Step 4: Simplify right side
    563.71x = 216,043.01
  5. Step 5: Solve for x
    x = 216,043.01/563.71
  6. Step 6: Final answer
    x = 383.25

Related Problems

Find fourth proportional to 281.85, 422.78 and 127.75
Half scale
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Double scale
Find fourth proportional to 564.71, 847.06 and 256.50
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.