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Finding the Fourth Proportional to 563.48, 845.45 and 289.67

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Solution

The fourth proportional to 563.48, 845.45 and 289.67 is: 434.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.48 : 845.45 = 289.67 : x
  2. Step 2: Convert to fraction form
    563.48/845.45 = 289.67/x
  3. Step 3: Cross multiply
    563.48x = 845.45 × 289.67
  4. Step 4: Simplify right side
    563.48x = 244,901.50
  5. Step 5: Solve for x
    x = 244,901.50/563.48
  6. Step 6: Final answer
    x = 434.62

Related Problems

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Half scale
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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.