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Finding the Fourth Proportional to 649.20, 895.59 and 471.89

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Solution

The fourth proportional to 649.20, 895.59 and 471.89 is: 650.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.20 : 895.59 = 471.89 : x
  2. Step 2: Convert to fraction form
    649.20/895.59 = 471.89/x
  3. Step 3: Cross multiply
    649.20x = 895.59 × 471.89
  4. Step 4: Simplify right side
    649.20x = 422,617.43
  5. Step 5: Solve for x
    x = 422,617.43/649.20
  6. Step 6: Final answer
    x = 650.98

Related Problems

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Half scale
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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.