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Finding the Fourth Proportional to 555.66, 764.64 and 471.96

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Solution

The fourth proportional to 555.66, 764.64 and 471.96 is: 649.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.66 : 764.64 = 471.96 : x
  2. Step 2: Convert to fraction form
    555.66/764.64 = 471.96/x
  3. Step 3: Cross multiply
    555.66x = 764.64 × 471.96
  4. Step 4: Simplify right side
    555.66x = 360,879.49
  5. Step 5: Solve for x
    x = 360,879.49/555.66
  6. Step 6: Final answer
    x = 649.46

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.