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Finding the Fourth Proportional to 559.04, 769.60 and 471.68

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Solution

The fourth proportional to 559.04, 769.60 and 471.68 is: 649.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.04 : 769.60 = 471.68 : x
  2. Step 2: Convert to fraction form
    559.04/769.60 = 471.68/x
  3. Step 3: Cross multiply
    559.04x = 769.60 × 471.68
  4. Step 4: Simplify right side
    559.04x = 363,004.93
  5. Step 5: Solve for x
    x = 363,004.93/559.04
  6. Step 6: Final answer
    x = 649.34

Related Problems

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Double scale
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1.5x scale

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.