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Finding the Fourth Proportional to 578.24, 866.55 and 434.06

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Solution

The fourth proportional to 578.24, 866.55 and 434.06 is: 650.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.24 : 866.55 = 434.06 : x
  2. Step 2: Convert to fraction form
    578.24/866.55 = 434.06/x
  3. Step 3: Cross multiply
    578.24x = 866.55 × 434.06
  4. Step 4: Simplify right side
    578.24x = 376,134.69
  5. Step 5: Solve for x
    x = 376,134.69/578.24
  6. Step 6: Final answer
    x = 650.48

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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.