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Finding the Fourth Proportional to 561.44, 775.04 and 430.88

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Solution

The fourth proportional to 561.44, 775.04 and 430.88 is: 594.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.44 : 775.04 = 430.88 : x
  2. Step 2: Convert to fraction form
    561.44/775.04 = 430.88/x
  3. Step 3: Cross multiply
    561.44x = 775.04 × 430.88
  4. Step 4: Simplify right side
    561.44x = 333,949.24
  5. Step 5: Solve for x
    x = 333,949.24/561.44
  6. Step 6: Final answer
    x = 594.81

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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.